Question

I want to know how can I make the string I converted from DWORD to onstringstream and then to AnsiString.

But that doesn’t really matter, the conversion could be from int to string, I just want to know how I can make every string converted to ALWAYS show 6 digits, like if my number is 57, in the string it will be 000057.

Thanks!

Answer 1

Use io manipulators setfill and setw:

#include <iostream>
#include <string>
#include <sstream>
#include <iomanip>

int main()
{
    std::ostringstream s;

    s << std::setfill('0') << std::setw(6) << 154;

    std::cout << s.str() << "\n";

    return 0;
}