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The function gmtime () transforms a date and time value (epoch seconds) to a struc- ture in which that value is broken down into year,
The function gmtime () transforms a date and time value (epoch seconds) to a struc- ture in which that value is broken down into year, month, day, hours, etc. by re- turning a pointer to a global tm structure, which contains the converted value. Subsequent calls to gmtime () return the same pointer and only update the global structure. a. Write a function that creates a persistent copy of the supplied tm structure on the heap and updates the caller's pointer to point to the copy. void make_persistent (struct tm **time); b. Extend your program with a function that releases a copy of the tm structure and resets the caller's pointer to NULL. void free_persistent (struct tm **time)
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