Multiplication of Matrices program in c

#include <stdio.h>


void main()


{


 int m,n,p,q,c,d,k,sum=0;


 int f[10][10],s[10][10],mul[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",&f[c][d]);


 printf("Enter the number of rows and columns of Second Matrix\n");


 scanf("%d%d",&p,&q);


 if(n!=p)


    printf("The matrices multiplication is not possible.\n");


 else


 {


  printf("Enter the elements of Second Matrix\n");


  for(c=0;c<p;c++)


    for(d=0;d<q;d++)


        scanf("%d",&s[c][d]);    


  for(c=0;c<m;c++)


     {


      for(d=0;d<q;d++)


         {


          for(k=0;k<p;k++)


             {


               sum=sum+f[c][k]*s[k][d];


             }


          mul[c][d]=sum;


          sum = 0;


         }


     }


 printf("Product of Matrices is:\n");


 for(c=0;c<m;c++)


    {  


     for(d=0;d<q;d++)


         printf("%d\t", mul[c][d]);


         printf("\n");
    }


 }


}


Output 1:
Enter the number of rows and columns of First Matrix


2
2


Enter the elements of First Matrix


1
2
3
4


Enter the number of rows and columns of Second Matrix
2
2


Enter the elements of Second Matrix
1
2
3
4


Product of Matrices is:
7    10   
15    22