File#5: copy from a file and paste on other file

/*
*   Masfiq
*   21 January, 2017
*
*   Topic: file open in different mode
*/

/*  file naqqmr: string
Saudi Arab
Bangladesh
Iran
Iraq
Syria
*/

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

int main(){

    ofstream out_file;
    out_file.open("new file.txt");
    ifstream in_file;
    in_file.open("string.txt");
    char* str = new char[20];
    while(true){
        in_file.getline(str, 20);

        if(in_file.eof())
            break;

        cout<<str<<endl;
        out_file.write(str, 20);
        out_file<<'\n';
    }


    return 0;
}