用C语言(apue)实现 把时间戳转换为国标格式的字符串（2017-07-17 22:36:12）的函数

/*******************************************************************************/  
/** 
*** 函 数 名:  char *Time2String(const time_t timep, char *strDest) 
*** 功能描述:  将时间转换成国标格式的字符串 
*** 全局变量:    
*** 输  入:     
       const time_t timep :获得的时间 
       char *strDest:存储转换后的字符串       
*** 输  出:     转换后的字符串地址   
******************************************************************************/  
char *Time2String(const time_t timep, char *strDest)  
{  
    char *address = strDest;  
   // assert(strDest != NULL);  
    struct tm* tm;  
    time_t tempTime = timep;  
    char *bars = (char *)"-",*colon = (char *)":",   
         *space = (char *)" ";  
        
    tm = localtime(&tempTime);  
    tm->tm_year += 1900;  
    tm->tm_mon += 1;  
    sprintf(strDest, "%04d%s%02d%s%02d%s%02d%s%02d%s%02d", tm->tm_year, bars, tm->tm_mon,   
            bars, tm->tm_mday, space, tm->tm_hour, colon, tm->tm_min, colon, tm->tm_sec);  
    
    return address;  
}