C++中fstream文件写入读出代码

#include <cstdlib>
#include <iostream>
#include <fstream>

using namespace std;

int main(int argc, char *argv[])
{
    int nYear, nMonth, nDate;
    
    cout<<"please input today(year month date):"<<endl;
    cin>>nYear>>nMonth>>nDate;
    
    ofstream fout("Date.txt");
    if( !fout.bad())
    {
        fout<<"the day user input is: \n"
            <<nYear<<" "<<nMonth<<" "<<nDate;
        fout.close();
    }
    else
    {
        cout<<"cann't open and write this file."<<endl;
    }
    
    ifstream fin("Date.txt");
    if( !fin.bad())
    {
        fin.ignore(256,'\n');
        fin>>nYear>>nMonth>>nDate;
        cout<<"date in the file is :"<<nYear<<"-"<<nMonth<<"-"<<nDate<<endl;
        fin.close();
    }
    else
    {
        cout<<"cann't open this file."<<endl;
    }
    
    
    
    return 0;
    system("PAUSE");
    return EXIT_SUCCESS;
}