fcloseall - close all open streams
#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <stdio.h>
The fcloseall() function closes all of the calling processs open streams. Buffered output for each stream is written before it is closed (as for fflush(3)); buffered input is discarded.
The standard streams, stdin, stdout, and stderr are also closed.
This function returns 0 if all files were successfully closed; on error, EOF is returned.
This function is a GNU extension.
close(2), fclose(3), fflush(3), fopen(3), setbuf(3)
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