Integer x = 1; while (x < 2) { System.debug(x); x++; }
Standard input is empty
Object: Integer error: did not understand #x MessageNotUnderstood(Exception)>>signal (ExcHandling.st:254) Integer class(Object)>>doesNotUnderstand: #x (SysExcept.st:1448) UndefinedObject>>executeStatements (prog:1) Object: nil error: did not understand #< MessageNotUnderstood(Exception)>>signal (ExcHandling.st:254) UndefinedObject(Object)>>doesNotUnderstand: #< (SysExcept.st:1448) UndefinedObject>>executeStatements (prog:2)
./prog:3: parse error, expected '}'