Matrix Multiplication

Sample Input: First matrix: 1 1
1 1

Second matrix: 1 1
1 1

Sample Output: 2 2
2 2
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//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 number of rows and columns of second matrix\n");
scanf("%d%d", &p, &q);
while(n!=p)
{
printf("Enter the number of rows and columns of first matrix\n");
scanf("%d%d", &m, &n);
printf("Enter the number of rows and columns of second matrix\n");
scanf("%d%d", &p, &q);
}
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 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;
}

(By:shahimtiyaj)