位域的sizeof（二）

#include <iostream>
using namespace std;

int main(void)
{
    struct test2
    {
        char a:2;
        char b:2;
        int c:2;
        char d:2;
    }t2;

    memset(&t2, 0, sizeof(t2));
    t2.a = 3;
    t2.b = 2;
    t2.c = 3;
    t2.d = 3;

    char *p = (char*)&t2;

    //每个字节的地址和存储的值。
    for (int i = 0; i < sizeof(t2); i++)
    {
        cout << "address:" << hex << (int)(p+i) << " ";
        cout << "value:" << dec << (int*)*(p+i) << endl;
    }

    cout << sizeof(t2) << endl;
    system("pause");
    return 0;
}

 

address:12ff54  value:0000000B
address:12ff55  value:00000000
address:12ff56  value:00000000
address:12ff57  value:00000000
address:12ff58  value:00000003
address:12ff59  value:00000000
address:12ff5a  value:00000000
address:12ff5b  value:00000000
address:12ff5c  value:00000003
address:12ff5d  value:00000000
address:12ff5e  value:00000000
address:12ff5f  value:00000000
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