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Thursday, 7 February 2013

C PROGRAM: TO MULTIPLY TWO MATRICES

CODING:
#include<stdio.h>
#include<conio.h>
void main()
{
 int a[10][10],b[10][10],mul[10][10],m,n,p,q,i,j,k;
 clrscr();
 ab:
 printf("Enter order of matrix A: ");
 scanf("%d%d",&m,&n);
 printf("Enter order of matrix B: ");
 scanf("%d%d",&p,&q);
 if(n!=p)
 {
  printf("\nError: multiplication not possible\nTry again....\n");
  goto ab;
 }
 for(i=1;i<=m;i++)
 {
  for(j=1;j<=n;j++)
  {
   printf("Enter value of a[%d][%d]: ",i,j);
   scanf("%d",&a[i][j]);
  }
 }
 for(i=1;i<=p;i++)
 {
  for(j=1;j<=q;j++)
  {
   printf("Enter value of b[%d][%d]: ",i,j);
   scanf("%d",&b[i][j]);
  }
 }
 printf("\nAnswer:\n");
 for(i=1;i<=m;i++)
 {
  for(j=1;j<=q;j++)
  {
   mul[i][j]=0;
   for(k=1;k<=n;k++)
    mul[i][j]=mul[i][j]+a[i][k]*b[k][j];
   printf("%4d",mul[i][j]);
  }
  printf("\n");
 }
 getch();
}


CODING

OUTPUT

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