format/always42.cpp

The following code example is taken from the book
C++20 - The Complete Guide by Nicolai M. Josuttis, Leanpub, 2021
The code is licensed under a Creative Commons Attribution 4.0 International License.

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// raw code

#include "always42.hpp"
#include "formatalways42.hpp"
#include <iostream>

int main()
{
  try {
    Always42 val;
    std::cout << val.getValue() << '\n';
    std::cout << std::format("Value: {}\n", val);
    std::cout << std::format("Twice: {0} {0}\n", val);
    std::cout << std::format("With width: '{:7}'\n", val);
    std::cout << std::format("With all:   '{:.^7}'\n", val);
  }
  catch (std::format_error& e) {
    std::cerr << "Format Error: " << e.what() << std::endl;
  }
}