它是关于课程结束时的半冒号

Question

如果我们在类中声明一个成员函数但是在类之外定义它，那么在关闭类之后的半冒号呢

Answer 1

一个人为的例子，显示哪些位需要;以及哪些位不是：

class Point
{
    int x; // Member variable declarations need terminating with ;
    int y;
public:
    int getX (); // Member function declarations need terminating with ;
    int getY ();
}; // Class declaration needs terminating with ; , even if the function definition follows

int Point::getX ()
{
    return x;
}  // Member function definition doesn't have a terminating ;

希望这能回答你的问题，但如果没有，请澄清问题。