掌握对象的程序结构

#include <iostream>#include <cstring>using namespace std;class Student{private:    int num;    char name[20];    char sex;public:    void set_data(int n,char*p,char s)   {       num=n;       strcpy(name,p);       sex=s;   }   void display()   {       cout<<"num:"<<num<<endl;       cout<<"name:"<<name<<endl;       cout<<"sex:"<<sex<<endl;   }}; int main() {     Student stud1,stud2;     stud1.set_data(1,"He",'f');     stud2.set_data(2,"she",'m');     stud1.display();     stud2.display();     return 0; }