用C语言从键盘输入身份证号并从中提取出生日期，帮帮忙看错哪了，谢谢
#include<stdio.h>int main(void)
{
int year,month,day;
scanf("%*6%4d%2d%2d%*d",&year,&month,&day);
printf("%4d-%2d-%2d",year,month,day);
return 0;
}
scanf("%*6d%4d%2d%2d%*d",&year,&month,&day);
少了一个d