class C {
static void main(String[] args) {
//@ assert 1.0 == 1.0; // correct but fails
//@ assert 1.0 != 2.0; // correct but fails
//@ assert 1.0 + 1.0 == 2.0; // correct but fails
//@ assert "Hello world" != null; // correct and passes
String s = "Hello world";
char c = s.charAt(3);
c = "Hello world".charAt(3);
//@ assert c == 'l'; // correct but fails
System.out.println(c == 'l');
//@ assert 2 + 2 == 4; // correct and passes
//@ assert 2000000 < 4000000; // correct and passes
//@ assert 2000000 + 2000000 == 4000000; // correct but fails
}
}