C++ 类的 this 指针 语法练习2

#include <iostream>#include <string>using namespace std;// 定义一个类 Studentclass Student{private:string name;int    age;string address;public:// 存void setname(string s){name = s;}void setage(int y){age = y;}void setaddress(string add){address = add;}    // 取string getname(){return name;}int getage(){return age;}string getaddress(){return address;} // 返回 指向Student 对象的指针,因为this是指针,且是指向当下对象的指针Student* Show(){cout<<"姓名: "<<name<<" --- 年龄: "<<age<<" ---- 住址: "<<address<<endl; return this;}     protected:};int main(void){   Student x;      x.setname("柳絮飘");   x.setage(22);   x.setaddress("学明路115号");    // 类的成员函数Show返回的是this指针,    // x.Show()并没有用一个指针变量来接受它的返回值就直接用了.   // 有返回值的函数,调用时并不一定要搞个变量接受它的返回值.   x.Show()->Show()->Show()->Show(); //    cout<<"--------------------------------------------------"<<endl;   // 搞个指针变量来接受吧.   Student * y =NULL;   y = x.Show();   y->Show()->Show()->Show();// --------------------return 0;}

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