File7

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

using namespace std;

int main(){
    char in_file[1024], out_file[1024];
    system("clear");
    cout << "Enter the name of the input file: ";
    cin.getline(in_file, 1024, '\n');
    cout << "Enter the name of the output file: ";
    cin.getline(out_file, 1024, '\n');
    ifstream in(in_file);
    ofstream out(out_file);
    char ch;
    bool letter_printed = false;
    while(in.get(ch)){
        if( (ch >= 'A' && ch <= 'Z') ||
            (ch >= 'a' && ch <= 'z')){
            out.put(ch);
            cout << ch;
            letter_printed = true;
        }
        else{
            if(letter_printed){
                cout << "\n";
                out.put('\n');
            }
            letter_printed = false;
        }
    }
    in.close();
    out.close();
    return 0;
}