error handling ex1

int f2(); // error handling of f2() is along the lines of f1()
int f3(); // error handling of f3() is along the lines of f1()

int f1() {
	int ret = 0;
	try {
		if(f2() == ERROR) {
			// <log error message stored somewhere else>
			throw 1;
		}
		if(f3() == ERROR) {
			// <log error message stored somewhere else>
			throw 1;
		}
	}
	catch(const int& err) {
		ret = err;
	}
	return ret;
}