C Program To Matrix Multiplication.

/* Matrix Multiplication */

#include <stdio.h>

int main()

{

int m, n, p, q, c, d, k, sum = 0;

int first[10][10], second[10][10], multiply[10][10];

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

scanf("%d%d", &m, &n);

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

for (  c = 0 ; c < m ; c++ )

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

scanf("%d", &first[c][d]);

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

scanf("%d%d", &p, &q);

if ( n != p )

printf("Matrices with entered orders can't be multiplied with each other.\n");

else

{

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

for ( c = 0 ; c < p ; c++ )

for ( d = 0 ; d < q ; d++ )

scanf("%d", &second[c][d]);

for ( c = 0 ; c < m ; c++ )

{

for ( d = 0 ; d < q ; d++ )

{

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

{

sum = sum + first[c][k]*second[k][d];

}

multiply[c][d] = sum;

sum = 0;

}

}

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

for ( c = 0 ; c < m ; c++ )

{

for ( d = 0 ; d < q ; d++ )

printf("%d\t", multiply[c][d]);

printf("\n");

}

}

return 0;

}

Output:-

Matrix Multiplication