69.类型后缀,重载操作符""

 #include <iostream>
 using namespace std;

 class myclass
 {
 public:
     int num;
     int num2;

 public:
     myclass(int num)
     {
         this->num = ;
         this->num2 = num;
     }
 };

 //后缀定义只能在外部
 //加后缀的类型只能为char,wchar_t,char16_t或unsigned long long
 myclass operator "" _cocos_cgw(unsigned long long data)
 {
     //返回一个类,在寄存器中生成,调用一个参数的构造函数,大括号给类初始化
     return  { (int)data };
 }

 void main()
 {
     myclass mynum = 12_cocos_cgw;
     cout << mynum.num << endl;
     cout << mynum.num2 << endl;
     cin.get();
 }