// C program for matrix multiplication
#include <stdio.h>
int main(){
  int row1, col1, row2, col2, i, j, k, sum = 0;
  int firstMatrix[10][10], secondMatrix[10][10], mulMatrix[10][10];

  printf("Enter number of rows and columns for first matrix here : ");
  scanf("%d%d", &row1, &col1);
  printf("Enter all the elements of first matrix : \n");

  for (i = 0; i < row1; i++){      // scanning element of first matrix
    for (j = 0; j < col1; j++){
      scanf("%d", &firstMatrix[i][j]);
    }
  }
  printf("Enter number of rows and columns for second matrix here : ");
  scanf("%d%d", &row2, &col2);

  if (col1 != row2){
    printf("Multiplication is not possible.\n");
  }else{
    printf("Enter all the elements of second matrix : \n");

    for (i = 0; i < row2; i++){      // scanning elements of second matrix
      for (j = 0; j < col2; j++){
        scanf("%d", &secondMatrix[i][j]);
      }
    }

    for (i = 0; i < row1; i++) {       // multiplying them
      for (j = 0; j < col1; j++) {
        for (k = 0; k < row2; k++) {
          sum = sum + firstMatrix[i][k]*secondMatrix[k][j];
        }
        mulMatrix[i][j] = sum;
        sum = 0;
      }
    }

    printf("Product of this two matrix is : \n");

    for (i = 0; i < row1; i++) {         // printing result
      for (j = 0; j < col2; j++)
        printf("%d\t", mulMatrix[i][j]);

      printf("\n");
    }
  }
  return 0;
}