在Java中(实际上，我最近在不同的SO帖子上写过这个):

    int x = 1 + + + + + + + + + + + + + 1;
    System.out.println(x);

C和c++中的三联体。

int main() {
   printf("LOL??!");
}

这将打印LOL|，因为trigraph ??!转换为|。

A very tiny thing that annoyed me in COBOL was that there was no dedicated modulo operation. Instead you could do a division specifying that you only wanted whole number results and store the rest in a different variable. Since COBOL is very sensitive when it comes to variables that means that you ended up with a variable you didn't really need, i.e. the actual result of the division. This is the story of how I once named a variable "USELESS" - that was the most appropriate name I could think of.

Javascript中有很多东西会让你流泪。

局部变量的作用域，举个简单的例子:

function foo(obj)
{
  for (var n = 0; n < 10; n++)
  {
    var t;        // Here is a 't'
    ...
  }
  t = "okay";     // And here's the same 't'
}

一般来说，弱类型。

C:

printf("%c\n", 'a' + 3);

PHP:

echo 5 + "3";

还有太多其他语言。

Java的访问修饰符对我来说是最近的一个WTF(因为我必须学习一点)。

显然，包比类层次结构更亲密。我不能定义对子类可见但对包中的其他类不可见的方法和属性。为什么我要将一个类的内部共享给其他类呢?

但是我可以定义对包内的每个类可见的属性和方法，但对包外的子类不可见。

不管我怎么想，我还是看不出其中的逻辑。切换访问修饰符，使受保护的行为就像它在c++中工作一样，并保持包的私有修饰符，这是有意义的。但现在不是了。