#include <iostream>
#include <fstream>
#include <cstdlib>
#include <cstring>
#include <windows.h>
using namespace std;

int main(int argc, char* argv[])
{
    int spacesToRemove = -1;

    if (argc == 1 || argc > 3)
    {
        cout << "Please provide a directory to the file, in which you want to remove unwanted spaces.\n"
             << "You can do this in two ways:\n"
             << "1. Drag .txt file onto the executable of this program;\n"
             << "2. Open cmd and provide a directory to this program's executable,\n"
             << "then after space a directory to your .txt file, optionally you can provide\n"
             << "a number of spces to remove, i.e.:\n"
             << "C:\\RemoveSpaces.exe C:\\MyTxtFile.txt 5\n";
        system("pause");
        return 1;
    }
    else if (argc == 2)
    {
        cout << "Please provide a number of spaces to remove: ";
        cin >> spacesToRemove;
    }
    else if (argc == 3)
    {
        spacesToRemove = atoi(argv[2]);
    }

    ifstream file;
    ofstream newFile;

    file.open(argv[1]);
    newFile.open(strcat(argv[1], "new"));

    string str;

    while (true)
    {
        getline(file, str);

        if (str.length() > spacesToRemove)
        {
            str = str.substr(spacesToRemove);
        }

        newFile << str << '\n';

        if (file.eof())
        {
            break;
        }
    }

    newFile.close();
    file.close();
    system("pause");
    return 0;
}