文件流（小山）

#include <iostream>
#include <cstdio>
using namespace std;
struct no{
    string name;
    int age;
    string blc;
    int shengao;
    int tizhong;
};

int main(int argc, char** argv) {
    int c;
    cin>>c;
    no asd[5];
    if(c==1){
        freopen("student.txt","w",stdout); 
        for(int i=0;i<5;i++){
        cin>>asd[i].name>>asd[i].age>>asd[i].blc>>asd[i].shengao>>asd[i].tizhong;
        cout<<asd[i].name<<" "<<asd[i].age<<" "<<asd[i].blc<<asd[i].shengao<<" "<<asd[i].tizhong;
        cout<<endl;
    }
    fclose(stdout);
    }else if(c==2){
        string name;
        cin>>name;
        freopen("student.txt","r",stdin);
        for(int i=0;i<5;i++){
        cin>>asd[i].name>>asd[i].age>>asd[i].blc>>asd[i].shengao>>asd[i].tizhong;
        if(name==asd[i].name){
        cout<<asd[i].name<<" "<<asd[i].age<<" "<<asd[i].blc<<asd[i].shengao<<" "<<asd[i].tizhong;    
        }
    }
    fclose(stdout);
    }else if(c==3){
        string name_1;
        cin>>name_1;
        freopen("student.txt","w",stdout); 
        for(int i=0;i<5;i++){
        cin>>asd[i].name>>asd[i].age>>asd[i].blc>>asd[i].shengao>>asd[i].tizhong;
        if(name_1==asd.name){
            cout<<asd[i].name<<" "<<asd[i].age<<" "<<asd[i].blc<<asd[i].shengao<<" "<<asd[i].tizhong;
            cout<<endl;
        }
        }
    }
    return 0;
}
/*

*/