_:n399c374fc09e4800a05231a68d0e178fxb0
<http://schema.org/description>
"1. C 표준 라이브러리 함수 int getDayOfWeek(int year, int month, int day) { struct tm *pResultTime; struct tm targetTime = { 0, 0, 0, day, month-1, year - 1900 }; time_t targetSec = mktime(&targetTim.."
<https://www.cocoadev.co.kr/283>