View difference between Paste ID: Ttapaey3 and dW17Bq8d

 /*C programme to multiply mattrix*/
 #include <stdio.h>
 int main()
 {
     int a[10][10], b[10][10], mult[10][10], r1, c1, r2, c2, i, j, k;
     printf("Enter rows and column for first matrix: ");
     scanf("%d%d", &r1, &c1);
     printf("Enter rows and column for second matrix: ");
     scanf("%d%d",&r2, &c2);
 
 /* If colum of first matrix in not equal to row of second matrix, asking user to enter the size of matrix again. */
     while (c1!=r2)
     {
         printf("Error! column of first matrix not equal to row of second.\n\n");
         printf("Enter rows and column for first matrix: ");
         scanf("%d%d", &r1, &c1);
         printf("Enter rows and column for second matrix: ");
         scanf("%d%d",&r2, &c2);
     }
 
 /* Storing elements of first matrix. */
     printf("\nEnter elements of matrix 1:\n");
     for(i=0; i<r1; ++i)
     for(j=0; j<c1; ++j)
     {
         printf("Enter elements a%d%d: ",i+1,j+1);
         scanf("%d",&a[i][j]);
     }
 
 /* Storing elements of second matrix. */
     printf("\nEnter elements of matrix 2:\n");
     for(i=0; i<r2; ++i)
     for(j=0; j<c2; ++j)
     {
         printf("Enter elements b%d%d: ",i+1,j+1);
         scanf("%d",&b[i][j]);
     }
 
 /* Initializing elements of matrix mult to 0.*/
     for(i=0; i<r1; ++i)
     for(j=0; j<c2; ++j)
     {
        mult[i][j]=0;
     }
 
 /* Multiplying matrix a and b and storing in array mult. */
     for(i=0; i<r1; ++i)
     for(j=0; j<c2; ++j)
     for(k=0; k<c1; ++k)
     {
         mult[i][j]+=a[i][k]*b[k][j];
     }
 
 /* Displaying the multiplication of two matrix. */
     printf("\nOutput Matrix:\n");
     for(i=0; i<r1; ++i)
     for(j=0; j<c2; ++j)
     {
         printf("%d  ",mult[i][j]);
         if(j==c2-1)
             printf("\n\n");
     }
     return 0;
 }