---

#include <iostream>;
using namespace std;

int main() {

	int num1 = 5;
	int num2 = 10;
	char operation; //     "*" "+" "-"

	switch (operation) {
		case 1:	
			cout << "" << endl;
			break;
		case 2:
			cout << "" << endl;
			break;
		case 3:
			cout << "" << endl;
			break;
	}
	return 0;
}