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friend Myst operator-(Myst&, Myst&); friend Myst operator-(Myst, Mys; friend Myst operator-(Myst, Myst&); friend Myst operator-(Myst&, Mys;
friend Myst operator-(Myst&,Myst&); friend Myst operator-(Myst,Mys; friend Myst operator-(Myst,Myst&); friend Myst operator-(Myst&,Mys;
拷贝构造函数是一种构造函数 拷贝构造函数与一般的构造函数一样,可以设置多个形参 每一个类中都必须有一个拷贝构造函数 拷贝构造函数的功能是用一个已知对象去初始化一个正在创建的对象。
friend Myst operator-(Myst&,Myst&); friend Myst operator-(Myst,Mys; friend Myst operator-(Myst,Myst&); friend Myst operator-(Myst&,Mys;
friend Myst operator-(Myst&,Myst&); friend Myst operator-(Myst,Myst); friend Myst operator-(Myst,Myst&); friend Myst operator-(Myst&,Myst);
friend MyClas operator+(int,MyClas&); friend MyClas operator+(MyClas,MyCla; friend MyClas operator+(MyClas,MyClas&); friend MyClas operator+(MyClas&,MyCla;
friend Myst operator-(Myst&, Myst&); friend Myst operator-(Myst, Myst); friend Myst operator-(Myst, Myst&); friend Myst operator-(Myst&, Myst);
friend Myst operator- (Myst&, Myst&); friend Myst operator- (Myst,Myst); friend Myst operator- (Myst,Myst&); friend Myst operator- (Myst&,Myst);
friend Myst operator-(Myst&,Myst&); friend Myst operator-(Myst,Myst); friend Myst operator-(Myst,Myst&); friend Myst operator-(Myst&,Myst);
friend Myst operator- (Myst&, Myst&); friend Myst operator- (Myst,Mys; friend Myst operator- (Myst,Myst&); friend Myst operator- (Myst&,Mys;
拷贝构造函数是一种构造函数 拷贝构造函数与一般的构造函数一样,可以设置多个形参 每一个类中都必须有一个拷贝构造函数 拷贝构造函数的功有是用一个已知对象去初始化一个正在创建的对象。
friend Myst operator-(Myst&,Myst&); friend Myst operator-(Myst,Mys; friend Myst operator-(Myst,Myst&); friend Myst operator-(Myst&,Mys;
船首尾各放一个 只需要在船首放置一个 只需要在船尾放置一个 每根缆绳各放置一个
friend Myst operator-(Myst&,Myst&); friend Myst operator-(Myst,Myst); friend Myst operator-(Myst,Myst&); friend Myst operator-(Myst&,Myst);
friend Myst operator-(Myst&,Myst&); friend Myst operator-(Myst,Myst); friend Myst operator-(Myst,Myst&); friend Myst operator-(Myst&,Myst);
friend MyClas operator+(int,MyClas&); friend MyClas operator+(MyClas,MyClas); friend MyClas operator+(MyClas,MyClas&); friend MyClas operator+(MyClas&,MyClas);