Typedef struct XXX 与 Typedef struct

#include


typedef unsigned char BYTE;


/* typedef struct _i_CARD_FLAG { //测试结构体
BYTE card_here_flag = 0; //卡是否存在标志
} i_CARD_FLAG;
*/


typedef struct _data
{
BYTE month ;
int day;
int year;
}DATE;


typedef struct 
{
BYTE month ;
int day;
int year;
}DATE1;


int main(void)
{


struct _data foo;
DATE bar;
// i_CARD_FLAG card_flag;
// i_CARD_FLAG * pindex = &card_flag;
return 0;
}