【c++11关键字】 sizeof

/*
 * c++11关键字
 * sizeof
 * 小鱼号的代码日志
*/
#include <QCoreApplication>
#include <iostream>
using namespace  std;
struct Empty{};
struct Base{int a;};
struct Derived:Base
{
    int b;
};
struct Bit
{
    unsigned bit:1;
};
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    Empty e;
    Derived d;
    Base& b = d;
    Bit bit;
    cout << sizeof(e) << endl;
    cout << sizeof(Empty) << endl;
    cout << sizeof(&e) << endl;
    cout << sizeof(Derived) << endl;
    cout << sizeof(d) << endl;
    cout << sizeof(void) << endl;//BAD
    return a.exec();
}