How does clion automatically generate function declarations in .c files into .h files?

for example, if I have a function in the c file that I want to export and open to others to call, how can I automatically generate these function declarations into the .h header file?

CPP c
Mar.17,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b2c464-2bb14.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2c464-2bb14.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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