#include <stdio.h>

int main(){
	char *x, *y;
	char cat_value[100];
	x = "Hello";
	y = "World";
	int cat_size;

	cat_size = sizeof(12 * sizeof(char));

	printf("%s\n", x);
	snprintf(cat_value, 100, "%s,%s\n", x, y);

	printf("%s", cat_value);

	return 0;
}