[Error] expected primary-expression before '.' token

#include<stdio.h>
int main()
{

    typedef struct {
        int month;
        int day;
        int year;
    }Date;
    Date = { 0,1,1};
    printf("%d", Date.day);
    return 0;
}

你没写结构体名称呀

#include<stdio.h>
int main()
{
 
    typedef struct date{
        int month;
        int day;
        int year;
    };
    struct date Date = { 0,1,1};
    printf("%d", Date.day);
    return 0;
}