void main() {
    test(0 != 5);
    test(4 != 5);
    test(5 != 5);
    test(6 != 5);
    test(10 != 5);
    test(0.0 != 5.0);
    test(4.0 != 5.0);
    test(5.0 != 5.0);
    test(6.0 != 5.0);
    test(10.0 != 5.0);
    test(false != false);
    test(true != false);
    test(false != true);
    test(true != true);
}