#include <iostream>
#include <string>

void print_indented_const(std::size_t dist, const std::string& s)
{
    std::cout << std::string(dist, ' ') << s << '\n' ;
}

void print_indented(std::size_t dist, std::string& s)
{
    print_indented_const(dist, s);
}

int main()
{
    print_indented(5, "some text");  // illegal
    print_indented_const(5, "some text");  // legal
}