Inserting and removing commas from integers in c++

Question

Very much a noob here, so it\'s best to assume I know nothing in any answers.

I\'ve been writing a little app, and it\'s working well, but readability is a nightmare

Answer 1

Try the numpunct facet and overload the do_thousands_sep function. There is an example. I also hacked up something that just solves your problem:

#include <locale>
#include <iostream>

class my_numpunct: public std::numpunct<char> {
    std::string do_grouping() const { return "\3"; }
}; 

int main() {
    std::locale nl(std::locale(), new my_numpunct); 
    std::cout.imbue(nl);
    std::cout << 1000000 << "\n"; // does not use thousands' separators
    std::cout.imbue(std::locale());
    std::cout << 1000000 << "\n"; // uses thousands' separators
}