#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main(int argc, char * argv[]) {
	long x, y;
	char* position_x;
	char* position_y;
	
	x = strtol(argv[1], &position_x, 10);
	y = strtol(argv[2], &position_y, 10);

	if ((x == 0) && (position_x==argv[1])) {
		puts("Entier invalide.");
		return EXIT_FAILURE;
	} else if (*position_x != '\0') {
		puts("Conversion partielle !");
		return EXIT_FAILURE;
	}

	if ((y == 0) && (position_y==argv[2])) {
		puts("Entier invalide.");
		return EXIT_FAILURE;
	} else if (*position_y != '\0') {
		puts("Conversion partielle !");
		return EXIT_FAILURE;
	}

	long z = x * y;
	printf("%d * %d = %d\n", x, y, z);

	return EXIT_SUCCESS;
}