以前のリビジョンの文書です
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====== 時間の扱い ====== ---- #include <ctime> * time_t : 型。環境によるがlong int からのtypedefが多い？ UNIX timeを格納するのに使う * tm : 構造体。 * function * time_t mktime( struct tm* st_time ) : tm をtime_t (UNIX time)に変換 * struct tm* localtime( const time_t *time ) : time_t から tm に変換（local timeとして） * struct tm* gmtime( const time_t *time ) : time_t から tm に変換（ UTCとして） * size_t strftime( char* buf, size_t buflen, char* form, struct tm* st_time ) : tmを文字列に変換 * char *strptime(const char *buf, const char *format, struct tm *tm) : 文字列をtmに変換 <code cpp> time_t StartTime struct tm* tm_Start = localtime(&StartTime); char buf[100]; strftime(buf, sizeof(buf), "%Y%m%d", tm_Start); struct tm tm_A; char *TimeChar = "3/27/2017-20:00:00"; strptime(TimeString, "%m/%d/%Y-%H:%M:%S", &tm_A); time_t time = mktime(&tm_A); </code>
