sizeof操作符的一些例子

 例一：

#include <iostream>
using namespace std;

class A
{
public:
    char c;
};

class B
{
public:
    int a;
    short b;
};

class C
{
public:
    int a;
    short b;
    char c;
};

class D
{
public:
    int a;
    short b;
    char c;
    char d;
};

class E
{
public:
    int a;
    short b;
    char c;
    char d;
    char e;
};

int main()
{
    cout<< "sizeof(A) = " <<sizeof(A) << endl;
    cout<< "sizeof(B) = " <<sizeof(B) << endl;
    cout<< "sizeof(C) = " <<sizeof(C) << endl;
    cout<< "sizeof(D) = " <<sizeof(D) << endl;
    cout<< "sizeof(E) = " <<sizeof(E) << endl;
    return 0;
}

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