一个日志函数

#define BUFF_SIZE 1024
void myLog(const char * format,...)
{
    va_list argList;
    char buff[BUFF_SIZE];
    va_start(argList,format);
    vsnprintf(buff,BUFF_SIZE,format,argList);
    va_end(argList);
    
    time_t now;
    struct tm *tm;
    time(&now);
    tm = localtime(&now);
    char buff_log[BUFF_SIZE];
    snprintf(buff_log,BUFF_SIZE,"%.4d.%.2d.%.2d %.2d:%.2d:%.2d %s",
            tm->tm_year+1900,tm->tm_mon+1,tm->tm_mday,tm->tm_hour,tm->tm_min,tm->tm_sec,buff);
    //Now buff_log has the log information.

}