C++연습_전역변수(Global variable)

#include <iostream>

const int g_y{ 1 };
constexpr int g_z{ 2 };

void doSomething()
{
    std::cout << g_y << '\n';
    std::cout << g_z << '\n';
}

int main()
{
    doSomething();

    std::cout << g_y << '\n';
    std::cout << g_z << '\n';

    return 0;
}

 

결과

 

www.learncpp.com/cpp-tutorial/introduction-to-global-variables/

6.4 — Introduction to global variables | Learn C++