union.cpp

来自「C++ sample code, for the book: C++ blac」· C++ 代码 · 共 24 行

#include <iostream>
using namespace std;

int main()
{
    union one_union
    {
        int int_variable;
        long long_variable;
        double double_variable;
        double double_variable2;
    };

    one_union p;

    p.int_variable = 1;
    p.double_variable = 3.14159;

    cout << p.int_variable << endl;
    cout << p.double_variable << endl;
    cout << p.double_variable2 << endl;

    return 0;
}