Program to create pyramid of Star in C

#include
#include
void main()
     {
       int i,j,k,s,n;
       printf(" ENTER THE NO OF ROWS");
       scanf("%d",&n);

       for(i=1,s=n;i<=n;i++,s--)
           {
             for(k=1;k<=s;k++)
                 printf(" ");
             for(j=1;j<=i;j++)
                 printf("*");
              printf(" ");
            }
       getch();
 }

Program to create double pyramid in C

#include
#include
void main(void)
{
    clrscr();
    int i,j,k,l,b,n;
    printf("Enter the value of N:");
    scanf("%d",&n);
    for(i=0;i<=n;i++)
{
    printf(" ");
    for(l=0;l<=i;l++)
    printf(" ");
    for(j=i+1;j<=n;j++)
    printf("%d",j);
    for(k=n-1;k>i;k--)
    printf("%d",k);
}
    b=n-1;
    for(i=0;i<=n-1;i++)
{
    printf(" ");
    for(l=n-2;l>=i;l--)
    printf(" ");
    for(j=b;j<=n;j++)
    printf("%d",j);
    for(k=n-1;k>=b;k--)
    printf("%d",k);
    b--;
}
    getch();
}

Program to show Palindrome Verification in C, string is Palindrome or Not.

int palindrome( char* string )
 {
 int i = 0, j = strlen( string ) - 1;

 while( i < j / 2 ) 
{

  if( string[ i++ ] == string[ j-- ] )
       ;
  else 
{
   printf( "The String is not Palindrome" );
   return -1;
   }
  }

 printf( "The string is Palindrome" );
 return 0;
 }

 int main( )
 {
 palindrome( "Info " );
 palindrome( "Computers" );
 return 0;
 }

Program Showing Binary Equivalent of an Integer in C

main()

{

	int n;

	char ch;

	while(1)

	{

	clrscr();

	printf("Enter an integer to see its Binary Equivalent");

	printf("Enter	");

	scanf("%d",&n);

	showbits(n);



	printf("continue ?");

	ch=getch();

	if(ch==27)

	break;

	}

}/*End of main()*/



showbits(int n)

{

	int i,bit,mask,count=0;

	printf("	");

	for(i=15;i>=0;i--)

	{

		mask=1<

		bit=n & mask;



		if(bit==mask)

			printf("1");

		else

			printf("0");

		count++;

		if(count%4==0)

			printf("  ");

	}

}/*End of showbits()*/

CPU scheduling (Round Robin) Program in C

#include
#include
main()
{
  int st[10],bt[10],wt[10],tat[10],n,tq;
  int i,count=0,swt=0,stat=0,temp,sq=0;
  float awt=0.0,atat=0.0;
  clrscr();
  printf("Enter number of processes:");
  scanf("%d",&n);
  printf("Enter burst time for sequences:");
  for(i=0;i<=n;i++)
   {
     scanf("%d",&bt[i]);
     st[i]=bt[i];
   }
   printf("Enter time quantum:");
   scanf("%d",&tq);
   while(1)
   {
     for(i=0,count=0;i<=n;i++)
     {
       temp=tq;
       if(st[i]==0)
       {
  count++;
  continue;
       }
       if(st[i]=>tq)
 st[i]=st[i]-tq;
       else
 if(st[i]>=0)
 {
   temp=st[i];
   st[i]=0;
 }
 sq=sq+temp;
 tat[i]=sq;
     }
     if(n==count)
     break;
   }
   for(i=0;i<=n;i++)
   {
    wt[i]=tat[i]-bt[i];
    swt=swt+wt[i];
    stat=stat+tat[i];
   }
   awt=(float)swt/n;
   atat=(float)stat/n;
   printf("Process_no Burst time Wait time Turn around time
");
   for(i=0;i<=n;i++)
    printf("%d  %d  %d  %d
",i+1,bt[i],wt[i],tat[i]);
    printf("Avg wait time is %f
Avg turn around time is %f",awt,atat);
    getch();
}

Program to create Pyramid of Numbers in C

#include 
 #include 

 int pyramid( int length )
 {
 int line = 1;
 int j = 1, i, k = length;

 while( length-- ) 
{

  if( j == 1 ) {
   for( i = 1; i <= length + 5; i++ )
    printf( " " );
   printf( "%d", j++ );
   k--;
   line++;
  }

  else if( i % 2 ){
   for( i = 1; i <= length + 5; i++ )
    printf( " " );
   for( i = 1; i <= line; i++ )
    printf( "%d ", ( j++ % 10 ) );
   printf( " " );
   line++;
   k--;
  }

  else {
   for( i = 1; i <= length + 5    ; i++ )
    printf( " " );
   for( i = 1; i <= line; i++ )
    printf( "%d ", ( j++ % 10 ) );
   printf( " " );
   line++;
   k--;
  }
 }

    return 0;
 }

 int main( )
 {
 int length;

 printf( "Enter the list length " );
 scanf( "%d", &length );

 pyramid( length );
 getch( );
 return 0;
 }

Program to create Analog and Digital clock in C

# include 
# include 
# include 
# include 
# include 
# define pi 3.141592654
int x;
float x30,x60,y30,y60;
void paint1()
{
setcolor(GREEN);
outtextxy(297,60," ");
outtextxy(297,332," ");
outtextxy(435,198," ");
outtextxy(160,198," ");
setcolor(RED);
outtextxy(375,85,"è");
outtextxy(420,260,"è");
outtextxy(170,135,"è");
outtextxy(220,310,"è");
setcolor(LIGHTBLUE);
outtextxy(420,135,"ì");
outtextxy(375,310,"ì");
outtextxy(220,83,"ì");
outtextxy(175,260,"ì");
}
void paint2()
{
setcolor(RED);
outtextxy(297,60,"è");
outtextxy(297,332,"è");
outtextxy(435,198,"è");
outtextxy(160,198,"è");
setcolor(LIGHTBLUE);
outtextxy(375,85,"ì");
outtextxy(420,260,"ì");
outtextxy(170,135,"ì");
outtextxy(220,310,"ì");
setcolor(GREEN);
outtextxy(420,135," ");
outtextxy(375,310," ");
 outtextxy(220,83," ");
outtextxy(175,260," ");
}
void paint3()
{
setcolor(LIGHTBLUE);
outtextxy(297,60,"ì");
outtextxy(297,332,"ì");
outtextxy(435,198,"ì");
outtextxy(160,198,"ì");
setcolor(GREEN);
outtextxy(375,85," ");
outtextxy(420,260," ");
outtextxy(170,135," ");
outtextxy(220,310," ");
setcolor(RED);
outtextxy(420,135,"è");
outtextxy(375,310,"è");
outtextxy(220,83,"è");
outtextxy(175,260,"è");
}
void graph()
{
cleardevice();
setcolor((++x)%15+1);
if(x%2)
outtextxy(180,10,"THERE IS NO GOD EXCEPT ALLAH");
else
outtextxy(130,20,"PRAISE ALLAH THE MOST BENEFICIENT AND MERCIFUL");
setcolor(GREEN);
circle (300,200,150);
circle(300,200,2);
setcolor(14);
circle (300,200,100);
setcolor(3);
circle (300,200,120);
setcolor(RED);
circle(300,50,2);
circle(450,200,2);
 circle(150,200,2);
circle(300,350,2);
setcolor(BLUE);
circle(300+x30,200+y30,2);//1
circle(300-x30,200+y30,2);//11
circle(300+x30,200-y30,2);//5
circle(300-x30,200-y30,2);//7

circle(300+x60,200+y60,2);//2
circle(300+x60,200-y60,2);//4
circle(300-x60,200-y60,2);//8
circle(300-x60,200+y60,2);//10
if(x%2)
{
setcolor(x);
outtextxy(300+x30*1.1,200+y30*1.1,"1");//1
outtextxy(300-x30*1.1,200+y30*1.1,"11");//11
outtextxy(300+x30*1.1,200-y30*1.1,"5");//5
outtextxy(300-x30*1.1,200-y30*1.1,"7");//7

outtextxy(300+x60*1.1,200+y60*1.1,"2");//2
outtextxy(300+x60*1.1,200-y60*1.1,"4");//4
outtextxy(300-x60*1.1,200-y60*1.1,"8");//8
outtextxy(300-x60*1.15,200+y60*1.1,"10");//10
outtextxy(460,200,"3");
outtextxy(300,360,"6");
outtextxy(140,200,"9");
outtextxy(290,40,"12");
}
}

void plot(int h , int m , int s)
{
char a[2],b[2],c[2];
setcolor( LIGHTCYAN );
itoa(h,a,10);
outtextxy(450,100,a);
outtextxy(470,100,":");

itoa(m,a,10);
outtextxy(490,100,a);
outtextxy(510,100,":");

itoa(s,a,10);
outtextxy(530,100,a);
setcolor( LIGHTGREEN );
if( h<13 )
outtextxy( 290 , 250 , "AM");
else
outtextxy( 290 , 250, "PM");
h=h%12;
setlinestyle(SOLID_LINE , 1 , 3);
setcolor( RED );
line(300,200,300+floor(100*cos(((h*5+m/10.0)*6-90)*pi/180)),
 200+floor(100*sin(((h*5+m/10.0)*6-90)*pi/180)));
setcolor(BLUE);
setlinestyle(SOLID_LINE,1,3);
line(300,200,300+floor(120*cos((m*6-90)*pi/180)),
 200+floor(120*sin((m*6-90)*pi/180)));
setcolor(MAGENTA);
setlinestyle(SOLID_LINE,1,1);
line(300,200,300+floor(120*cos((s*6-90)*pi/180)),
 200+floor(120*sin((s*6-90)*pi/180)));
}

void timexy()
{
int h,m,s;
struct time t;
while(1)
{
//clrscr();
  cleardevice();
graph();
gettime(&t);
//printf("









 The current time is:
%2d:%02d:%02d.%02d
",
//       t.ti_hour, t.ti_min, t.ti_sec,t.ti_hund);
h=t.ti_hour;
m=t.ti_min;
s=t.ti_sec;
if(s%3==0)
paint1();
else if(s%3==1)
     paint3();
     else paint2();
plot(h,m,s);
delay(995);
}
}
main()
{
int i=DETECT,m;
char a[100],b[10]="jalpari";
x30=floor(150*cos((30-90)*pi/180));
y30=floor(150*sin((30-90)*pi/180));
x60=floor(150*cos((60-90)*pi/180));
y60=floor(150*sin((60-90)*pi/180));
initgraph(&i,&m,"d:\tc\bgi");
i=0;
printf("
 PASSWORD==>");
do
{
a[i]=getch();
if(!(a[i]==(char)13))
{
printf("vasim");
i++;
}
else {a[i]='

Program to Count Blanks Spaces ,Tabs and Newlines in Given String In C

#include

int main(void)
{
 int nb,nt,nl,c;
 nb=nt=nl=0;

 while((c=getchar())!=EOF)
 {
  if(c==' ')
   ++nb;
  if(c==' ')
   ++nt;
  if(c==' ')
   ++nl;
 }

 printf("No. of Blanks is %d,No. of Tabs is %d and No. of Newlines is %d",nb,nt,nl);

return 0;
}

Write a program to find permutation in c

#include
#include
int lev=-1,n,val[50],a[50];
void main()
{
 int i,j;
 clrscr();
 printf("Enter how many numbers");
 scanf("%d",&n);
 for(i=0;i<=n;i++)
 {
  val[i]=0;
  j=i+1;
  scanf("%d",&a[j]);
 }
 visit(0);
 getch();
}
visit(int k)
{
 int i;
 val[k]=++lev;
 if(lev==n)
 {
  for(i=0;i<=n;i++)
  printf("%2d",a[val[i]]);
  printf(" ");
 }
 for(i=0;i<=n;i++)
 if(val[i]==0)
 visit(i);
 lev--;
 val[k]=0;
}

Program To Calculate SQRT square root Of Any Number.

Program To Calculate SQRT square root Of Any Number.

#include
#include
#include
      //prototyping of used functions
void decide(void);
void counter(void);
void evenodd(void);
void checkdigits(void);
void mainfun(void);
void mainfun2(void);
void printresult(void);
int next2digits(void);
int dig_after_dot(void);
      //global variables
int  
realflag=0,oddflag=0,digitflag=0,dotflag=0,DC=1,AC=0,FC,t,i,c,c2,r;
long int  l,j,rem,k,M;
char N[18],ans[14],ch;
float fn;

//**************************************************************

void main()
    {
     clrscr();
     fflush(stdin);
     printf("

 Enter the no : ");
     gets(N);
     //when -ve no is entered  then exit program
     if(N[0]=='-'||

Program to multiply two 3*3 matrices.

#include
#include

/*Program to multiply two 3*3 matrices*/

void main()
 {
  int a[3][3],b[3][3],c[3][3],i,j,k;
  clrscr();

  printf("Enter elements of A:");
    for(i=0;i<=2;i++)
     for(j=0;j<=2;j++)
      scanf("%d",&a[i][j]);

  printf("Enter elements of B:");
    for(i=0;i<=2;i++)
     for(j=0;j<=2;j++)
      scanf("%d",&b[i][j]);

   printf("A:");
      for(i=0;i<=2;i++)
      {
       for(j=0;j<=2;j++)
  printf("%d ",a[i][j]);
 printf(" "); //To change line.
       }

    printf("B:");
    for(i=0;i<=2;i++)
    {
     for(j=0;j<=2;j++)
      printf("%d ",b[i][j]);
     printf(" ");
    }
  k=0;
   while(k<=2)
   {
    for(i=0;i<=2;i++)
     {
      int sum=0;
      for(j=0;j<=2;j++)
       sum=sum+a[i][j]*b[j][k];
      c[i][k]=sum;
     }
    k++;
   }
  printf(" Result: ");
  for(i=0;i<=2;i++)
  {
   for(j=0;j<=2;j++)
    printf("%d ",c[i][j]);
   printf(" ");
  }
  getch();
}

Program to show Taylor's series-e^x in C

#include 
#include 
#include
long int factorial(int n);


void main()
{
 int x,i;
 float s,r;
 char c;
 clrscr();
printf("You have this series:-1+x/1! + x^2/2! + x^3/3! + x^4/4!..x^x/x!");
 printf("To which term you want its sum of ?  ");
 scanf("%d",&x);
 s=0;
 for (i=1;i<=x;i++)
  {   s=s+((float)pow(x,i)/(float)factorial(i)); 
}
 printf("The sum of %d terms is %f",x,1+s);

 fflush(stdin);
      getch();
}

long int factorial(int n)
 {
  if (n<=1)
 return(1);
  else
 n=n*factorial(n-1);
 return(n);
 }

Solution of Transportation Cost Problem in C

#include
#include

main()
{
int flag=0,flag1=0;
int s[10],d[10],sn,eop=1,dm,a[10][10];
int i,j,sum=0,min,x[10][10],k,fa,fb;

clrscr();
    /* Getting The Input For the Problem*/

printf("Enter the number of Supply");
scanf("%d",&sn);
printf("Enter the number of Demand");
scanf("%d",&dm);
printf("Enter the Supply Values");
for(i=0;i<=sn;i++) enter="" the="" demand="" j="0;j<=sn;j++)" elements="" of="" i="0;i=d[j])   //Check the supply greater than equal to
demand
   {
   x[i][j]=a[i][j]*d[j];      // Calculate  amount * demand
   s[i]=s[i]-d[j];           // Calculate supply - demand
   j++;                     // Increment j for the deletion of the row
or
column
   }

 }
 /* The  Cost Matrix is Estimated here */
 printf("Given Cost Matrix is :
");
  for(fa=0;fa<=sn;fa++) fb="0;fb<=dm;fb++)" the="" allocated="" cost="" matrix="" is="" fa="0;fa<=sn;fa++)" sum="sum+x[fa][fb];" transportation="" estimated="" and="" d="" pre="">




SAMPLE INPUT
11
13
17
14
16
18
14
10
21
24
13
10
11
11
11
11
Given Cost Matrix is :
11      13      17      14
16      18      14      10
21      24      13      10
11      11      11      11
Allocated Cost Matrix is
2200    650     0       0
0       3150    700     0
0       0       2925    500
0       0       0       2200
The Transportation cost:12325
*/

Program to find the reminder without using reminder in C

Program to find the reminder without using reminder in C.

#include 
#include 
main()
{
int a,b;
clrscr();
printf("enter the value of a=");
scanf("%d",&a);
printf("enter the value of b=");
scanf("%d",&b);
while(a-b>=b)
{
a=a-b;
}
printf("the reminder is =%d",a-b);
getch();
}

Program to generate cos series in C

# include 
# include 
main()
{
int i,p,n;
clrscr();
printf("enter the number in term of series");
scanf("%d",&n);
printf("xcos(x)=1");
for(i=1;i<=n;i++)
{
p=2*i;
if(i%2==0)
printf("+");
else
printf("-");
printf(x^%d/%d!",p,p);
getch();
}
}