例如下列代碼：#include "stdio.h"#include "time.h"void main(){ time_t lt; /*define a longint time varible*/ ——————（那個/*……*/里面包括的是什么文件?。﹍t=time(NULL);/*system time and date*/printf(ctime(<)); /*english format output*/printf(asctime(localtime(<)));/*tranfer to tm*/printf(asctime(gmtime(<))); /*tranfer to Greenwich time*/}