C++ version

Table of contents

#include <iostream>

int main()
{
  switch( __cplusplus ) {
  case 202002L:
    std::cout << "C++20\n";
    break;
  case 201703L:
    std::cout << "C++17\n";
    break;
  case 201402L:
    std::cout << "C++14\n";
    break;
  case 201103L:
    std::cout << "C++11\n";
    break;
  case 199711L:
    std::cout << "C++98\n";
    break;
  default:
    std::cout << "pre-standard C++: " << __cplusplus << "\n";
  }
  return 0;
}

Possible output

C++20

References

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