main()
{
 int a[10][10],b[10][10],c[10][10],i,j,m,n,ip,k,p,q;
 clrscr();
 printf("Input row and column of A matrix:");
 scanf("%d %d",&m,&n);
 printf("Input row and column of B matrix:");
 scanf("%d %d",&k,&q);
 if(n==k)
 {
  printf("Matrices can be multiplied\n");
  printf("The resultant matrix is %d x %d\n",m,q);
  printf("Input A-matrix\n");
  read_mat(a,m,n);
  printf("Input B-matrix\n");
  read_mat(b,k,q);
  for(i=0;i<m;++i)
    for(j=0;j<q;++j)
    {
    c[i][j] =0;
    for(ip=0;ip < n;++ip)
    c[i][j]=c[i][j] + a[i][ip] * b[ip][j];
    }
  printf("Resultant of A & B matrices :\n");
  write_mat(c,m,q);
  }
  else
  {
   printf("Column of matrix A must be equal to row matrix B\n");
   printf("Matrices can not multiplied\n");
  }
  getch();
  }
   read_mat(a,m,n)
   int a[10][10],m,n;
   {
    int i,j;
    for(i=0;i < m; i++)
     for(j=0;j < n; j++)
      scanf("%d",&a[i][j]);
   }
   write_mat(a,m,n)
   int a[10][10],m,n;
   {
    int i,j;
    for(i=0;i < m; i++)
    {
     for(j=0;j < n;j++)
     printf("%5d",a[i][j]);
     printf("\n");
    }
   }