=====mktime===== Syntax: #include time_t mktime( struct tm *time ); The mktime function converts the local time in ''time'' to calendar time, and returns it. The elements ''tm_wday'' and ''tm_yday'' of the struct ''time'' are recalculated and reset based on the other elements of the struct. If there is an error, -1 is returned and tm_yday and tm_wday remain unchanged. Related Topics: [[asctime]], [[ctime]], [[gmtime]], [[time]]