掌握对象的程序结构2

#include <iostream>
#include <cstring>
using namespace std;

class Student
{

public:
void set_data(int n,char*p,char s);
void display();
private:
int num;
char name[20];
char sex;

};
void Student::set_data(int n,char *p,char s)
{
num=n;
strcpy(name,p);
sex=s;
}
void Student::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;
}