下面是一个必须声明的局部变量，只是为了将一个常量传递给库函数:

// This only exists because Scott doesn't know how to use const correctly

//休斯顿，我们有麻烦了

//你不需要理解这个

经典。

Dennis M Ritchie在这里有一个关于一些古老UNIX注释的页面

try {

}
catch (SQLException ex) {
    // Basically, without saying too much, you're screwed. Royally and totally.
}
catch(Exception ex)
{
    //If you thought you were screwed before, boy have I news for you!!!
}

从泄露的Win2K源代码:

//这次黑客入侵的规模堪比国家债务的规模。