multiplications Table of large numbers in C

multiplications Table of large numbers in C | large numbers Calculations in C | large numbers Programs in C | Long Integers In C

#include
#include
#include
#include
#define MAX 10000

char * multiply(char [],char[]);
int main(){
    char a[MAX];
    char b[MAX];
    char *c;
    int la,lb;
    int i;
    printf("Enter the first number : ");
    scanf("%s",a);
    printf("Enter the second number : ");
    scanf("%s",b);
    printf("Multiplication of two numbers : ");
    c = multiply(a,b);
    printf("%s",c);
    return 0;
}

char * multiply(char a[],char b[]){
    static char mul[MAX];
    char c[MAX];
    char temp[MAX];
    int la,lb;
    int i,j,k=0,x=0,y;
    long int r=0;
    long sum = 0;
    la=strlen(a)-1;
        lb=strlen(b)-1;
   
        for(i=0;i<=la;i++){
                a[i] = a[i] - 48;
        }

        for(i=0;i<=lb;i++){
                b[i] = b[i] - 48;
        }

    for(i=lb;i>=0;i--){
         r=0;
         for(j=la;j>=0;j--){
             temp[k++] = (b[i]*a[j] + r)%10;
             r = (b[i]*a[j]+r)/10;
         }
         temp[k++] = r;
         x++;
         for(y = 0;y<x;y++){
             temp[k++] = 0;
         }
    }
   
    k=0;
    r=0;
    for(i=0;i<la+lb+2;i++){
         sum =0;
         y=0;
         for(j=1;j<=lb+1;j++){
             if(i <= la+j){
                 sum = sum + temp[y+i];
             }
             y += j + la + 1;
         }
         c[k++] = (sum+r) %10;
         r = (sum+r)/10;
    }
    c[k] = r;
    j=0;
    for(i=k-1;i>=0;i--){
         mul[j++]=c[i] + 48;
    }
    mul[j]='\0';
    return m

Related Links :

C program to find power of a large number

C program to find power of a large number | Power of Large Numbers in C | Find Power Of Numbers in C Language

#include
#include
#define MAX 10000

char * multiply(char [],char[]);
int main(){
    char a[MAX];
    char *c;
    int i,n;
    printf("Enter the base number: ");
    scanf("%s",a);
    printf("Enter the power: ");
    scanf("%d",&n);

    printf("Power of the %s^%d: ",a,n);

    c = multiply(a,"1");
    for(i=0;i<n-1;i++)
         c = multiply(a,c);

    while(*c)
    if(*c =='0')
         c++;
    else
         break;

    printf("%s",c);
    return 0;
}

char * multiply(char num1[],char num2[]){
    static char mul[MAX];
    char a[MAX];
    char b[MAX];
    char c[MAX];
    char temp[MAX];
    int la,lb;
    int i=0,j,k=0,x=0,y;
    long int r=0;
    long sum = 0;
   

    while(num1[i]){
         a[i] = num1[i];
         i++;
    }
    a[i]= '\0';

    i=0;
    while(num2[i]){
         b[i] = num2[i];
         i++;
    }
    b[i]= '\0';

    la=strlen(a)-1;
        lb=strlen(b)-1;
  
        for(i=0;i<=la;i++){
                a[i] = a[i] - 48;
        }

        for(i=0;i<=lb;i++){
                b[i] = b[i] - 48;
        }

    for(i=lb;i>=0;i--){
         r=0;
         for(j=la;j>=0;j--){
             temp[k++] = (b[i]*a[j] + r)%10;
             r = (b[i]*a[j]+r)/10;
         }
         temp[k++] = r;
         x++;
         for(y = 0;y<x;y++){
             temp[k++] = 0;
         }
    }
  
    k=0;
    r=0;
    for(i=0;i<la+lb+2;i++){
         sum =0;
         y=0;
         for(j=1;j<=lb+1;j++){
             if(i <= la+j){
                 sum = sum + temp[y+i];
             }
             y += j + la + 1;
         }
         c[k++] = (sum+r) %10;
         r = (sum+r)/10;
    }
    c[k] = r;
    j=0;
    for(i=k-1;i>=0;i--){
         mul[j++]=c[i] + 48;
    }
    mul[j]='\0';
    return mul;
}

Related Links :

C Program to remove duplicate elements from given array

C Program to remove duplicate elements from given array | deleting Duplicate Elements from array

#include
int main(){
  int arr[50];
  int *p;
  int i,j,k,size,n;
  printf("\nEnter size of the array: ");
  scanf("%d",&n);
  printf("\nEnter %d elements into the array: ",n);
  for(i=0;i<n;i++)
    scanf("%d",&arr[i]);
  size=n;
  p=arr;
  for(i=0;i<size;i++){
    for(j=0;j<size;j++){
         if(i==j){
             continue;
         }
         else if(*(p+i)==*(p+j)){
             k=j;
             size--;
             while(k < size){
                 *(p+k)=*(p+k+1);
                 k++;
              }
              j=0;
          }
      }
  }
  printf("\nThe array after removing duplicates is: ");
  for(i=0;i < size;i++){
    printf(" %d",arr[i]);
  }
  return 0;
}

Related Links :

Find 2nd Largest Number From Array in C || C program to find the second largest element in an array

Find 2nd Largest Number From Array in C || C program to find the second largest element in an array

#include
int main(){
  int a[50],size,i,j=0,big,secondbig;
  printf("Enter the size of the array: ");
  scanf("%d",&size);
  printf("Enter %d elements in to the array: ", size);
  for(i=0;i<size;i++)
      scanf("%d",&a[i]);
 
  big=a[0];
  for(i=1;i<size;i++){
      if(big<a[i]){
           big=a[i];
           j = i;
      }
  }

  secondbig=a[size-j-1];
  for(i=1;i<size;i++){
      if(secondbig <a[i] && j != i)
          secondbig =a[i];
  }
  
  printf("Second biggest: %d", secondbig);
  return 0;
}

Related Links :

Program to Add or subtract two complex numbers

Program to Add or subtract two complex numbers

#include
int main(){
  int a,b,c,d,x,y;
  printf("\nEnter the first complex number:");
  scanf("%d%d",&a,&b);
  printf("\nEnter the second complex number:");
  scanf("%d%d",&c,&d);
  if(b<0)
      printf("%d-i\n",a-b);
  else
      printf("d+i\n",a+b);
  if(d<0)
      printf("d-i\n",c-d);
  else
      printf("%d+i\n",c+d);
  printf("\nADDITION ");
  x=a+c;
  y=b+d;
  if(y>0)
      printf("%d-i%d",x,-y);
  else
      printf("%d+i%d",x,+y);
  printf("\n\nSUBTRACTION ");
  x=a-c;
  y=b-d;
  if(y<0)
      printf("%d-i%d",x,-y);
  else
      printf("%d+i%d",x,+y);
  return 0;
}

Related Links :

C program for cleardevice | cleardevice attached in C

C program for cleardevice | cleardevice attached in C

#include
#include
 
main()
{
   int gd = DETECT, gm;
   initgraph(&gd, &gm, "C:\\TC\\BGI");
 
   outtext("Press any key to clear the screen.");
   getch();
   cleardevice();
   outtext("Press any key to exit...");
 
   getch();
   closegraph();
   return 0;
}

Related Links :

draw a circle in C | Cirlce Graphic in C

draw a circle in C

#include
#include
 
main()
{
   int gd = DETECT, gm;
 
   initgraph(&gd, &gm, "C:\\TC\\BGI");
 
   circle(100, 100, 50);
 
   getch();
   closegraph();
   return 0;
}

Related Links :

arc graphics function in c | Drawing Arc in C

arc graphics function in c, Drawing Arc in C

#include
#include
 
main()
{
   int gd = DETECT, gm;
 
   initgraph(&gd, &gm, "C:\\TC\\BGI");
 
   arc(100, 100, 0, 135, 50);
 
   getch();
   closegraph();
   return 0;
}

Related Links :

C Program to change system date | SetDate Function in C | Change System Clock Time From C

C Program to change system date | SetDate Function in C | Change System Clock Time From C

#include
#include
#include
 
main()
{
/*Program to change System Date*/

   struct date d;
 
   printf("Enter the new date ( day, month and year ) as integers ");
   scanf("%d%d%d",&d.da_day,&d.da_mon,&d.da_year);
 
   setdate(&d);
 
   printf("Now Current system date is %d/%d/%d\n",d.da_day,d.da_mon,d.da_year);
 
   getch();
   return 0;
}

Related Links :

gettime() Function in C

gettime() Function in C
Returns System Time.

#include
#include
 
main()
{
   struct time t;
 
   gettime(&t);
 
   printf("Current system time is %d : %d : %d\n",t.ti_hour,t.ti_min,t.ti_sec);
 
   return 0;
}

Related Links :

Getdate Function in C

Getdate Function in C

#include
#include
 
main()
{
   struct date d;
 
   getdate(&d);
 
   printf("Current system date is %d/%d/%d\n",d.da_day,d.da_mon,d.da_year);
 
   return 0;
}

Related Links :

delay function in c

To use delay function in your program you should include the dos.h header file.

#include
#include
 
main()
{
    printf("This c program will exit in 10 seconds.\n");        
 
    delay(10000);                         
 
    return 0;
}

Related Links :

using chdir in c, chdir function in c,

chdir Example program in C, chdir Demo in C, program using chdir function in C

 #include   
 #include   
 #include   
 #include   
  
 const char * const path = "d:/popsys/test";  
 const char * const file = "lernc.txt";  
   
 int main () {  
    printf ("Changing directory to <%s>\n", path);  
      
    if (chdir (path) == -1) {  
        printf ("chdir failed - %s\n", strerror (errno));  
    }else {  
        printf ("chdir done !!!\n");  
        printf ("directory content of '%s'\n\n", path);  
        system ("ls -l");  
        printf ("\n");  
        printf ("checking the content of '%s'\n", file);  
        system ("cat lernc.txt");  
    }  
    return 0;  
 }  

Related Links :

fopen example in c, use of fopen function in C, C File handling

fopen example in c, use of fopen function in C, C File handling

 #include   
  
 void main()  
 {  
    FILE *fopen(), *fp;  
    int c ;   
    fp = fopen( "lernc.com", "r" );  /*open file for reading */
    c = getc( fp ) ;     
    while (  c != EOF )  
    {  
        putchar( c );     
        c = getc ( fp );    
    }  
       
    fclose( fp );  
 }   

Related Links :

c Program to count characters in given file, Count characters

c Program to count characters in given file, Count characters in from file, number of characters in given file

#include     
  
 void main()   
 {  
    FILE *fopen(), *fp;   
    int c , nc, nlines;   
    char filename[40] ;  
    nlines = 0 ;   
    nc = 0;    
    printf("Enter file name: ");   
    gets( filename );   
    fp = fopen( filename, "r" );       
    if ( fp == NULL )   
    {   
        printf("Cannot open %s for reading \n", filename );   
        exit(1);      /* terminate program */   
    }    
    c = getc( fp ) ;           
    while (  c != EOF )   
    {   
        if ( c  ==  '\n'  )   
        nlines++ ;   
        nc++ ;    
        c = getc ( fp );   
    }   
    fclose( fp );    
    if ( nc != 0 )   
    {   
        printf("There are %d characters in %s \n", nc, filename );   
        printf("There are %d lines \n", nlines );   
    }   
    else  
    {      
        printf("File: %s is empty \n", filename );   
    }  
 }   

Related Links :

c program to count number of lines in a file

c program to count number of lines in a file, Number of lines in given text file

#include     
  
 void main()   
 {  
    FILE *fopen(), *fp;   
    int c , nc, nlines;   
    char filename[40] ;  
    nlines = 0 ;   
    nc = 0;    
    printf("Enter the file name: ");   
    gets( filename );   
    fp = fopen( filename, "r" );       
    if ( fp == NULL )   
    {   
        printf("Sorry Cannot open %s for reading \n", filename );   
        exit(1);      /* End program */   
    }    
    c = getc( fp ) ;           
    while (  c != EOF )   
    {   
        if ( c  ==  '\n'  )   
        nlines++ ;   
        nc++ ;    
        c = getc ( fp );   
    }   
    fclose( fp );    
    if ( nc != 0 )   
    {   
        printf("There are %d characters in %s \n", nc, filename );   
        printf("There are %d lines \n", nlines );   
    }   
    else  
    {      
        printf("Ohh.h....File: %s is empty \n", filename );   
    }  
 }   

Related Links :

c program to compare two files without using predefined Function

c program to compare two files without using predefined Function

#include  

 void main()  
 { 
    FILE *fp1, *fp2, *fopen(); 
    int ca, cb; 
    char fname1[40], fname2[40] ;  
    printf("Enter name of first file :") ; 
    gets(fname1); 
    printf("Enter name of second file:"); 
    gets(fname2); 
    fp1 = fopen( fname1,  "r" );       /* open file1 for reading */ 
    fp2 = fopen( fname2,  "r" ) ;      /* open file 2 for reading */  
    if ( fp1 == NULL )      /* check does file exist etc */ 
    { 
        printf("Cannot open %s for reading \n", fname1 ); 
        exit(1);    /* terminate program */ 
    } 
    else if ( fp2 == NULL ) 
    { 
        printf("Cannot open %s for reading \n", fname2 ); 
        exit(1);    /* terminate program */ 
    } 
    else   /* both files opened successfully  */ 
    { 
        ca  =  getc( fp1 ) ;   
        cb  =  getc( fp2 ) ; 
        while ( ca != EOF   &&   cb != EOF   &&   ca == cb  ) 
        { 
            ca  =  getc( fp1 ) ;   
            cb  =  getc( fp2 ) ; 
        } 
        if (  ca == cb ) 
            printf("Files are identical \n"); 
        else if ( ca !=  cb ) 
            printf("Files differ \n" ); 
        
        fclose ( fp1 );    
        fclose ( fp2 ); 
    } 
 } 

Related Links :

Program to Move car in C

Program to Move car in C,C program to move a car, car running program in C, car game in C

#include 
#include 
#include  
 
main()
{
   int i, j = 0, gd = DETECT, gm;
 
   initgraph(&gd,&gm,"C:\\TC\\BGI");
 
   settextstyle(DEFAULT_FONT,HORIZ_DIR,2);
   outtextxy(25,240,"Press any key to view the moving car");
 
   getch();
   setviewport(0,0,639,440,1);
 
   for( i = 0 ; i <= 420 ; i = i + 10, j++ )
   {
      rectangle(50+i,275,150+i,400);
      rectangle(150+i,350,200+i,400);
      circle(75+i,410,10);
      circle(175+i,410,10);
      setcolor(j);
      delay(100);
 
      if( i == 420 )
         break;
 
      clearviewport();
   }
 
   getch();
   closegraph();
   return 0;
}

Related Links :

Creating captcha in C, captcha program in c

Creating captcha in C, captcha program in c, Captcha in C, C Language to show captcha

#include
#include
#include
 
main()
{
   int i = 0, key, num, midx, gd = DETECT, gm;
   char a[10];
 
   initgraph(&gd,&gm,"C:\\TC\\BGI");
 
   midx = getmaxx()/2;
 
   settextstyle(SCRIPT_FONT,HORIZ_DIR,5);
   settextjustify(CENTER_TEXT,CENTER_TEXT);
   setcolor(GREEN);
   outtextxy(midx,20,"CAPTCHA");
   settextstyle(SCRIPT_FONT,HORIZ_DIR,2);
   outtextxy(midx,125,"Press any key to change the generated random code \"captcha\"");
   outtextxy(midx,150,"Press escape key to exit...");
 
   setcolor(WHITE);
   setviewport(100,200,600,400,1);
   setcolor(RED);
   randomize();
 
   while(1)
   {
      while(i<6)
      {
         num = random(3);
 
         if ( num == 0 )
            a[i] = 65 + random(26);     /* 65 is the ASCII value of A */
         else if ( num == 1)
            a[i] = 97 + random(26);     /* 97 is the ASCII value of a */
         else
            a[i] = 48 + random(10);     /* 48 is the ASCII value of 0 */
         i++;
      }
      a[i] = '\0';
      outtextxy(210,100,a);
      key = getch();
 
      if( key == 27 )                     /* escape key*/
         exit(0);
      clearviewport();
      i = 0;
   }
}

Related Links :

traffic light program in c, traffic light simulation in C

traffic light program in c, traffic light simulation in C

#include
#include
#include
#include
 
main()
{
   int gd = DETECT, gm, midx, midy;
 
   initgraph(&gd, &gm, "C:\\TC\\BGI");
 
   midx = getmaxx()/2;
   midy = getmaxy()/2;
 
   setcolor(RED);
   settextstyle(SCRIPT_FONT, HORIZ_DIR, 3);
   settextjustify(CENTER_TEXT, CENTER_TEXT);
   outtextxy(midx, midy-10, "Traffic Light Simulation");
   outtextxy(midx, midy+10, "Press any key to start");
   getch();
   cleardevice();
   setcolor(WHITE);
   settextstyle(DEFAULT_FONT, HORIZ_DIR, 1);
   rectangle(midx-30,midy-80,midx+30,midy+80);
   circle(midx, midy-50, 22);
   setfillstyle(SOLID_FILL,RED);
   floodfill(midx, midy-50,WHITE);
   setcolor(BLUE);
   outtextxy(midx,midy-50,"STOP");
   delay(2000);
   graphdefaults();
   cleardevice();
   setcolor(WHITE);
   rectangle(midx-30,midy-80,midx+30,midy+80);
   circle(midx, midy, 20);
   setfillstyle(SOLID_FILL,YELLOW);
   floodfill(midx, midy,WHITE);
   setcolor(BLUE);
   outtextxy(midx-18,midy-3,"READY");
 
   delay(2000);
   cleardevice();
   setcolor(WHITE);
   rectangle(midx-30,midy-80,midx+30,midy+80);
   circle(midx, midy+50, 22);
   setfillstyle(SOLID_FILL,GREEN);
   floodfill(midx, midy+50,WHITE);
   setcolor(BLUE);
   outtextxy(midx-7,midy+48,"GO");
   setcolor(RED);
   settextstyle(SCRIPT_FONT, HORIZ_DIR, 4);
   outtextxy(midx-150, midy+100, "Press any key to exit...");
 
   getch();
   closegraph();
   return 0;
}

Related Links :

Best fortran compiler for Windows 7

I think Best FORTRAN compiler for Windows 7 are follows :


http://www.gnu.org/software/gcc/
http://gcc.gnu.org/install/binaries.html

Related Links :

Program to Calculating interest C

Program to Calculating interest C

double recursive(double base, int runs) {

     static double m_rate = 1 + (10/100);   /* Ten percent interest*/
      
      double new_base = (base*m_rate);
      

      if (runs != 0)
      return recursive(new_base,runs-1);

      else 
      return new_base;
}

int main() {
printf("%.2f",recursive(100,10));
return 0;
}

Related Links :

C Program 2D arrays with structs and pointers

C Program 2D arrays with structs and pointers

#include 
#include 

#define NUM_ROWS 20
#define NUM_COLS 20

#define WALL 0
#define FLOOR 1
#define PASS 1
#define NOT_PASS 0

typedef struct playerChar {
    int HP;
} PlayerChar;

//General struct with pointers to every type of 'creature' that can be shown on map
typedef struct charPointers {
    PlayerChar * pPointer;
} CharPointers;

int main (void) {
    initscr();
    noecho();
    curs_set(0);
    resize_term (NUM_ROWS, NUM_COLS);

    int i, j;
    int ** mapArray = (int **) malloc (NUM_ROWS * sizeof (int *));
    int ** passableArray = (int **) malloc (NUM_ROWS * sizeof (int *));
    int ** charLoc = (int **) malloc (NUM_ROWS * sizeof (int *));


    for (i = 0; i < NUM_ROWS; i++) {
        mapArray [i] = (int *) malloc (NUM_COLS * sizeof (int));
        passableArray [i] = (int *) malloc (NUM_COLS * sizeof (int));
        charLoc [i] = (int *) malloc (NUM_COLS * sizeof (CharPointers));
        for (j = 0; j < NUM_COLS; j++) {
            if (i == 0) {
                mapArray [i][j] = WALL;
                passableArray [i][j] = NOT_PASS;
            }
            else if (i == (NUM_ROWS - 1)) {
                mapArray [i][j] = WALL;
                passableArray [i][j] = NOT_PASS;
            }
            else if (j == 0) {
                mapArray [i][j] = WALL;
                passableArray [i][j] = NOT_PASS;
            }
            else if (j == (NUM_COLS - 1)) {
                mapArray [i][j] = WALL;
                passableArray [i][j] = NOT_PASS;
            }
            else {
                mapArray [i][j] = FLOOR;
                passableArray [i][j] = PASS;
            }
            charLoc[i][j].CharPointers.pPointer = NULL;
        }
    }

Related Links :

read an electric signal through sound card c++

read an electric signal through sound card

  CWaveFile   g_pWaveFile;
    WAVEFORMATEX  wfxInput;
     
    ZeroMemory( &wfxInput, sizeof(wfxInput));
    wfxInput.wFormatTag = WAVE_FORMAT_PCM;
    wfxInput.nSamplesPerSec = 22050
    wfxInput.wBitsPerSample =  8; 
    wfxInput.nChannels = 1;
    wfxInput.nBlockAlign = 
        wfxInput.nChannels * (wfxInput.wBitsPerSample / 8);
    wfxInput.nAvgBytesPerSec = 
        wfxInput.nBlockAlign * wfxInput.nSamplesPerSec;
     
    g_pWaveFile = new CWaveFile;
    if (FAILED(g_pWaveFile->Open("mywave.wav", &wfxInput,
        WAVEFILE_WRITE)))
    {
      g_pWaveFile->Close();
    }



=============================================


HRESULT RecordCapturedData() 
    {
      HRESULT hr;
      VOID* pbCaptureData  = NULL;
      DWORD dwCaptureLength;
      VOID* pbCaptureData2 = NULL;
      DWORD dwCaptureLength2;
      VOID* pbPlayData   = NULL;
      UINT  dwDataWrote;
      DWORD dwReadPos;
      LONG lLockSize;
     
      if (NULL == g_pDSBCapture)
          return S_FALSE;
      if (NULL == g_pWaveFile)
          return S_FALSE;
     
      if (FAILED (hr = g_pDSBCapture->GetCurrentPosition( 
        NULL, &dwReadPos)))
          return hr;
     
      // Lock everything between the private cursor 
      // and the read cursor, allowing for wraparound.
     
      lLockSize = dwReadPos - g_dwNextCaptureOffset;
      if( lLockSize < 0 ) lLockSize += g_dwCaptureBufferSize;
     
      if( lLockSize == 0 ) return S_FALSE;
     
      if (FAILED(hr = g_pDSBCapture->Lock( 
            g_dwNextCaptureOffset, lLockSize, 
            &pbCaptureData, &dwCaptureLength, 
            &pbCaptureData2, &dwCaptureLength2, 0L)))
        return hr;
     
      // Write the data. This is done in two steps
      // to account for wraparound.
    
      if (FAILED( hr = g_pWaveFile->Write( dwCaptureLength, 
          (BYTE*)pbCaptureData, &dwDataWrote)))
        return hr; 
     
      if (pbCaptureData2 != NULL)
      {
        if (FAILED(hr = g_pWaveFile->Write( 
            dwCaptureLength2, (BYTE*)pbCaptureData2, 
            &dwDataWrote)))
          return hr; 
      }
     
      // Unlock the capture buffer.
     
     g_pDSBCapture->Unlock( pbCaptureData, dwCaptureLength, 
        pbCaptureData2, dwCaptureLength2  );
      
      // Move the capture offset forward.
     
      g_dwNextCaptureOffset += dwCaptureLength; 
      g_dwNextCaptureOffset %= g_dwCaptureBufferSize; 
      g_dwNextCaptureOffset += dwCaptureLength2; 
      g_dwNextCaptureOffset %= g_dwCaptureBufferSize; 
     
      return S_OK;
    }

Related Links :

c program for arriving at a solution using bisection method

c program for arriving at a solution using bisection method

main()
{
 float a,b,c,x1,x2,x,series;
 double d;

 printf("enter a,b,c and x1(pos) & x2(neg)");
 scanf("%f%f%f%f%f", &a, &b, &c, &x1, &x2);

 read:

 x = (x1 + x2) / 2;
 series = a * x * x + b * x + c;
 d = fabs(series);

 if (d > 0.0001)
 {
  if (x * x1 < 0)
   x = x2;
  else
   x = x1;

  goto read;
 }
 else
 {
  printf("ans=%f", x);
 }

 return 0;
}

  

Related Links :