#include <stdio.h>
#include <stdlib.h>
//#include <conio.h>

void cetak (int [][15], int, int);
void isi (int [][15], int, int);

int main(void){

    int A[15][15], B[15][15], C[15][15];
    int j, N, M, R, S, b, l, k;

    printf ("\n\tPERKALIAN MATRIKS A DENGAN MATRIKS B\n\n");

    printf ("Banyak baris A= "); scanf("%d", &M);
    if(N == R){
    printf ("Banyak kolom A= "); scanf("%d", &N);
    printf  ("Banyak baris B=  "); scanf("%d", &R);
    }
    printf ("Banyak kolom B= "); scanf("%d", &S);

    printf ("\nInput Elemen Matriks A\n");
    isi_Matriks_A (A, M, N);
    printf ("\nInput Elemen Matriks B\n");
    isi_Matriks_B (B, N, S);

    for (b=1; b<=M; b++) {
        for (k=1; k<=S; k++){

            j=0;
            for (l=1; l<=N; l++){
                j+= (A[b][l] * B[l][k]);
            }
            C[b][k] = j;
        }
    }
    system ("cls");

    printf ("\nMatriks A:\n");
    cetak (A, M, N);
    printf ("\nMatriks B:\n");
    cetak (B, N, S);
    printf ("\nMatriks C= A*B:\n");
    cetak (C, M, S);
    return 0;
}

void cetak_Matriks_A (int A[][15], int M, int N)
{   int b, k;
    for (b=1; b<=M; b++)
    {
        for (k=1; k<=N; k++)
        {
          printf("%d\t", A[b][k]);
        }
        printf("\n");
    }
}

void cetak_Matriks_B (int B[][15], int R, int S)
{   int b, k;
    for (b=1; b<=M; b++)
    {
        for (k=1; k<=N; k++)
        {
          printf("%d\t", A[b][k]);
        }
        printf("\n");
    }
}

void cetak_hasil (int C[][15], int M, int S)
{   int b, k;
    for (b=1; b<=M; b++)
    {
        for (k=1; k<=S; k++)
        {
          printf("%d\t", C[b][k]);
        }
        printf("\n");
    }
}

void isi_Matriks_A (int A[][15], int M, int N){
	int b, k;
    for (b=1; b<=M; b++)
    {
        for (k=1; k<=N; k++)
        {
          printf("Input elemen a%d%d =", b, k);
          scanf("%d", &A[b][k]);
        }
    }

void isi_Matriks_B (int B[][15], int R, int S){
    int b, k;
    for (b=1; b<=R; b++){
        for (k=1; k<=S; k++){
          printf("Input elemen b%d%d =", b, k);
          scanf("%d", &B[b][k]);
        }
    }
}