getdate 未定义标识符,该加的头文件都加了啊，还是说我缺少什么文件。用的VS2010

#include<stdio.h>
#include<stdlib.h>
#include <dos.h>
#include<windows.h>
struct date
{
int year;
int month;
int day;
};
struct time
{
int hour;
int minute;
int second;
};
int main()
{
struct date d;
struct time t;
getdate(&d);
gettime(&t);
printf("the current day is:%d--%d--%d",d.year,d.month,d.day);
printf("the current time is:%d--%d--%d",t.hour,t.minute,t.second);
system("pause");
return 0;
}

相关了解……