C Programs to Matrix Multiplication

      This program multiplies two matrices which will be entered by the user, And also enter the range of matrix by the user.

C programming code

#include<stdio.h>

#include<conio.h>

void main()

{

   int a[3][3], b[3][3], m[3][3], i, j, k, n, sum[3][3];

   clrscr();

   printf("\n Enter the number of same rows and columns of first matrix ");

   scanf("%d",&n);

   printf("\n Enter the elements of first matrix\n");

   for (  i = 0 ; i < n ; i++ )

      for ( j = 0 ; j < n ; j++ )

         scanf("%d",&a[i][j]);

   printf("\n Enter the elements of second matrix\n");

      for ( i = 0 ; i < n ; i++ )

         for ( j = 0 ; j < n ; j++ )

            scanf("%d",&b[i][j]);

      for ( i = 0 ; i < n ; i++ )

      {

         for ( j = 0 ; j < n ; j++ )

         {

            sum[i][j]=0;

            for ( k = 0 ; k < n ; k++ )

            {

               sum[i][j] = sum[i][j] + a[i][k]*b[k][j];

            }

         }

      }

      printf("\n Product of entered matrices:-\n");

      for ( i = 0 ; i < n ; i++ )

      {

         for ( j = 0 ; j < n ; j++ )

            printf("%d\t",m[i][j]);

         printf("\n");

      }

   getch();

}

Output:-

                   

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