Set the number of digits for an Integer
c++, int, integer, iomanip
Solution
Use `std::setfill` and `std::setw` functions:
#include <iostream>
#include <iomanip>
int main()
{
std::cout << std::setfill('0') << std::setw(5) << 1;
}
outputs:
00001
See related questions: How can I pad an int with leading zeros when using cout << operator? Print leading zeros with C++ output operator (printf equivalent)?
Problem
Is there a way in C++ to make the compiler take a certain number of digits even if they first digits are 0's. For example: I have an item number that is 00001 and when I import the number from the file it displays a 1. I want it to import all five digits and display as 00001. I don't really have code to display because I don't even know what function to use for this and the code I have is working as advertised, it's just not what I want it to do. I could make the number a string, but I would prefer to keep it an integer.