#include <iostream>
#include <string>
#include <algorithm>

void swap( std::string &str, int index1, int index2 )
{
    char x = str[index1];
    str[index1] = str[index2];
    str[index2] = x;
}

std::string zmienione_metoda_z_polecenia( std::string str )
{
    for(auto i = 0; i < str.length() / 2; i++)
        swap( str, i, ( str.length() - 1 - i ) );
    return str;
}

std::string reverse( std::string str )
{
    std::reverse( str.begin(), str.end() );
    return str;
}

int main()
{
    std::string str = "programowanie";

    std::cout << reverse( str ) << "\n";

    std::cout << zmienione_metoda_z_polecenia( str ) << "\n";

    return 0;
}