Question

How to get the current runtime version in C++

Answer 1

#include <iostream>

int main() {
    if (__cplusplus == 199711L) {
        std::cout << "C++98 or C++03" << std::endl;
    } else if (__cplusplus == 201103L) {
        std::cout << "C++11" << std::endl;
    } else if (__cplusplus == 201402L) {
        std::cout << "C++14" << std::endl;
    } else if (__cplusplus == 201703L) {
        std::cout << "C++17" << std::endl;
    } else if (__cplusplus == 202002L) {
        std::cout << "C++20" << std::endl;
    } else if (__cplusplus > 202002L) {
        std::cout << "C++23 or later" << std::endl;
    } else {
        std::cout << "Unknown C++ version" << std::endl;
    }
}



/*
run:

C++17

*/

 

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