C语言结构变量的初始化

#include <stdio.h>
struct date{
	int year,month,day;
};
struct person{
	char name[30],sex;
	struct date birthday;
};
struct person jt={"景天",'M',{1662,10,4}};
void main(){
	static struct person txj={"唐雪见",'W',{1663,9,13}};
	static struct person lk={"龙葵",'W',{1663,10,5}};
	printf("name           sex  birthday\n");
	printf("--------------------------------\n");
	printf("%-14s %-4c %4d.%2d.%2d\n",jt.name,jt.sex,
		jt.birthday.year,jt.birthday.month,jt.birthday.day);
	printf("%-14s %-4c %4d.%2d.%2d\n",txj.name,txj.sex,
		txj.birthday.year,txj.birthday.month,txj.birthday.day);
	printf("%-14s %-4c %4d.%2d.%2d\n",lk.name,lk.sex,
		lk.birthday.year,lk.birthday.month,lk.birthday.day);
}