函数返回结构

#include<stdio.h>
struct date{
    int day;
    int month;
    int year;
};
struct date get(void);
int main(){
    struct date today={0,0,0};
    today=get();
    printf("%d-%d-%d",today.year,today.month,today.day);
    return 0;
}
struct date get(void){
    struct date d;
    printf("请输入：");
    scanf("%d %d %d",d.year,d.month,d.day);
    return (struct date)d;
}
为什么返回不了小白求解？