为什么输出的id不是已经设定的这个号码？
struct Teacher
{  char id[4];  char name[10];
    int age;      char course[20];
} teac[2]={    {"0324","Li",40,"C Language"},
        {"1728","Hu",30,"Data Structure"}};
#include<stdio.h>
int main()
{int i;
for(i=0;i<2;i++)
printf("%s teaches %s\n %d\n %d\n",teac[i].name,teac[i].course,teac[i].age,teac[i].id);
return 0;
}