已知两个时间戳判断这两个时间是否在同一天
int Same_Day(){ char Time1[11] = "1516766666";char Time2[11] = "1516788888";time_t Timestamp1,Timestamp2; struct tm *p1,*p2;char Day1[9]="";char Hour1[3]="";Timestamp1=atoi(Time1) + 28000; p1=gmtime(&Timestamp1);strftime(Day1, sizeof(date1),"%Y%m%d", p1);strftime(Hour1, sizeof(Hour1),"%H", p1);char Day2[9]="";char Hour2[3]="";Timestamp2=atoi(Time2) + 28000;p2=gmtime(&Timestamp2);strftime(Day2, sizeof(Day2),"%Y%m%d", p2);strftime(Hour2, sizeof(Hour2),"%H", p2);if(atoi(Day1)==atoi(Day2)&&atoi(Hour1)<=23){printf("在同一天");return 1;}else{printf("不在同一天");return 0;}}void main(void){Same_Day()；}
