C++类的声明和对象的定义——形式2（推荐）

//推荐形式的完整的程序#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<<endl;}int main(){  Student stud1,stud2;  stud1.set_data(1,"John",'m');  stud2.set_data(2,"Mary",'f');  stud1.display();  stud2.display();  return 0;}