C/C++UNION中包含STRUCT

测试环境:Win7x64,cn_visual_studio_2010_ultimate_x86_dvd_532347.iso,qt-opensource-windows-x86-msvc2010_opengl-5.3.2.exe

1、

  1.1、测试代码:

struct struct01
{
    union
    {
        int i;
        int j;
    };
};

struct struct02
{
    union
    {
        struct
        {
            int i;
            int j;
        } ss01;
        struct
        {
            int i;
            int j;
        } ss02;
    } u01;
};

void MainWindow::on_pushButton_clicked()
{
    struct01 s01 = {0};
    s01.i = 100;
    qDebug() << s01.i;
    qDebug() << s01.j;

    struct02 s02 = {0};
    s02.u01.ss01.i = 99;
    qDebug() << s02.u01.ss01.i;
    qDebug() << s02.u01.ss02.i;
}

  1.2、控制台输出:

100
100
99
99

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原文地址:https://www.cnblogs.com/cppskill/p/6432019.html