#include<iostream>
using namespace std;

typedef struct
{
    int year;
    int month;
    int date;
    int hour;
    int minute;
    int second;
    int millisecond;
}CALENDAR;

//CALENDAR* getCalendar()
//{
//    CALENDAR *cal = (CALENDAR *)malloc(sizeof(CALENDAR));
//    cal->year = 2015;
//    cal->month = 8;
//    cal->date = 15;
//    cal->hour = 14;
//    cal->minute = 34;
//    cal->second = 23;
//    cal->millisecond = 123;
//    return cal;
//}
CALENDAR *getCalendar()
{
    CALENDAR cal ;
    cal.year = 2015;
    cal.month = 8;
    cal.date = 15;
    cal.hour = 14;
    cal.minute = 34;
    cal.second = 23;
    cal.millisecond = 123;
    return &cal;
}

int main()
{
    CALENDAR calendar;
    CALENDAR* cal;
    cal = getCalendar();
#if 0
    calendar.year = cal->year;
    calendar.month = cal->month;
    calendar.date = cal->date;
    calendar.hour = cal->hour;
    calendar.minute = cal->minute;
    calendar.second = cal->second;
    calendar.millisecond = cal->millisecond;
#endif
    memcpy(&calendar, cal, sizeof(CALENDAR));
    cout << calendar.year << " "
        << calendar.month << " "
        << calendar.date << " "
        << calendar.hour << " "
        << calendar.minute << " "
        << calendar.second << " "
        << calendar.millisecond << " "
        << sizeof(CALENDAR) << endl;
    system("pause");
    return 0;
}

[ 本帖最后由 lianjiecuowu 于 2015-8-16 13:42 编辑 ]

memcpy是头文件<string.h>中的函数，详情请查看C或C++帮助手册。话说把C++当C用，怎么看怎么不爽啊！

cal 是 getCalender 函数里的局部变量，
不能在main 里使用