结构指针

和数组不同，结构变量的名字并不是结构变量的地址，必须使⽤&运算符

#include<stdio.h>

struct date {
    int  month;
    int  day;
    int  year;
};

int main(int argc, char const  *argv[])
{
    struct date today;
    today = (struct date){07, 31, 2014}
    struct date *pDate = &today;
......
}