C++文本文件的读写

#include <iostream>
#include <fstream>
using namespace std;
class Student {
public:
char name[10];
int num;
int age;
char addr[15];
friend ostream &operator<<(ostream &out, Student &s);
friend istream &operator>>(iostream &in, Student &s);
};


ostream & operator <<(ostream &out, Student &s){
out<<s.name<<" "<<s.num<<" "<<s.age<<" "<<s.addr<<endl;
return out;
}


istream & operator >>(istream &in, Student &s){
in>>s.name>>s.num>>s.age>>s.addr;
return in;
}
/* run this program using the console pauser or add your own getch, system("pause") or input loop */


int main(int argc, char** argv) {
ofstream ofile;
ifstream ifile;
ofile.open("d:\\s.txt");

Student s;
for(int i=1; i<=3; i++){
cout<<"请输入第"<<i<<"个学生的姓名 学号 年龄 住址"<<endl;
cin>>s;   //调用>>运算符重载函数，输入学生信息
ofile<<s;   //调用<<运算符重载函数，将学生信息写入到文件中
}

ofile.close();
cout<<endl<<"读出文件内容"<<endl;
ifile.open("d:\\s.txt");
ifile>>s;
while(!ifile.eof()) {
cout<<s;
ifile>>s;
}
ifile.close();
return 0;
}