Matrik_Expert.c

#include <stdio.h>

void preview(int matriks[2][2]) {
	int i, j;
	for (i = 0; i < 2; ++i) {
		printf("[");
		for (j = 0; j < 2; ++j)
			printf("%2d%s", matriks[i][j], (j + 1) < 2 ? ", " : "");
		printf("]\n");
	}
}

main() {
	int pilih, i, j, k;
	int matriks_1[2][2], matriks_2[2][2], matriks_hasil[2][2];

	printf("Menu pilihan \n");
	printf("1. Penjumlahan\n");
	printf("2. Perkalian\n");
	printf("3. Selesai\n");
	printf("Pilih : ");
	scanf("%d", &pilih);

	printf("\nMatriks 1\n");
	for (i = 0; i < 2; ++i) for (j = 0; j < 2; ++j) {
		printf("Input matriks ke-1 [%d][%d] : ", i, j);
		scanf("%d", &matriks_1[i][j]);
	}

	printf("\nMatriks 2\n");
	for (i = 0; i < 2; ++i) for (j = 0; j < 2; ++j) {
		printf("Input matriks ke-2 [%d][%d] : ", i, j);
		scanf("%d", &matriks_2[i][j]);
	}

	if (pilih > 2)
		return;
	else if (pilih == 1)
		for (i = 0; i < 2; ++i) for (j = 0; j < 2; ++j)
			matriks_hasil[i][j] = matriks_1[i][j] + matriks_2[i][j];
	else if (pilih == 2)
		for (i = 0; i < 2; ++i) for (j = 0; j < 2; ++j) {
			int temp = 0;
			for (k = 0; k < 2; ++k) 
				temp += matriks_1[i][k] * matriks_2[k][j];
			matriks_hasil[i][j] = temp;
		}
	
	printf("\nMatriks ke-1 :\n");
	preview(matriks_1);
	
	printf("\nMatriks ke-2 :\n");
	preview(matriks_2);
	
	printf("\nHasil operasi %s kedua matriks :\n", pilih == 1 ? "penjumlahan" : "perkalian");
	preview(matriks_hasil);
}