进程

http://www.cnblogs.com/Anker/p/3271773.html

http://no001.blog.51cto.com/1142339/493589

#include <stdio.h>

typedef union {
long i;
int k[5]; 
char c;
} DATE;

struct data
{
int cat;
DATE cow;
double dog;
} too;

int main() {
    printf("%ld
", sizeof(DATE));   // 24
    printf("%ld
", sizeof(too));     // 40
}