#include <iostream>
using namespace std;
#include <string.h>
class Student
{
public: //外部接口
 void input(char* pid,char* pname,int a,float s)；
 void modify(float s) {score=s;}
 //成员函数体放在类中自动成为内联函数
 void display() ；
private: //私有成员
char* id;
char* name;
int age;
float score;
};

#include "student.h" //包含类定义所在的头文件
void Student::input(char* pid,char* pname,int a,float s)
{
//成员函数的实现
id=new char[strlen(pid)+1];
strcpy(id,pid);
name=new char[strlen(pname)+1];
strcpy(name,pname);
age=a;
score=s;
}
void Student::display()
{
cout<<" id:"<<id<<endl; //虽在类外，成员函数仍可访问私有成员
cout<<" name:"<<name<<endl;
cout<<" age:"<<age<<endl;
cout<<"score:"<<score<<endl;
}