c++ Test funcs .cpp

#include <iostream>

using namespace std;

void testIt(int a, int b) {
	if (a != b) cout << "\n=== Bad test === \n Expected: " << a << " \n   Result: " << b << " \n";
}

void testIt(string a, string b) {
	if (a != b) cout << "\n=== Bad test === \n Expected: " << a << " \n   Result: " << b << " \n";
}

int sum(int, int);

int main() {
	if (true) {
		testIt(4, sum(2, 2));
		testIt(5, sum(2, 3));
		testIt(0, sum(10, -10));
	}
	///////////////////////////////////////////
	
	int a, b;
	cin >> a >> b;
	cout << sum(a, b) << endl;
	
	return 0;
}

int sum(int a, int b) {
	return a - b;
}
// Compiler: v.5.1.0