C++ file reading and writing ifstream ofstream completes the function of copying files

#include <iostream>
#include <fstream>
using namespace std;

intmain()
{
    ifstream f1;
    ofstream f2;
    char filename1[256];
    char filename2[256];
    char content[256];
    cout<<"Please enter the source file name: ";
    cin>>filename1;
    cout<<"Please enter the destination file name:";
    cin>>filename2;
    f1.open(filename1,ios::in); //Read data
    f2.open(filename2,ios::out); //Output data
    while(!f1.eof()){
        f1.getline(content,128);
        f2<<content<<endl;
    }
    f1.close();
    f2.close();
    return 0;
}