fgets
Synopsis
#include <stdio.h>
char *fgets(char *restrict s, int n, FILE *restrict stream);
Status
Partially implemented
Conformance
IEEE Std 1003.1-2017
Description
The fgets() function shall read bytes from stream into the array pointed to by s until n-1 bytes are read, or a
<newline> is read and transferred to s, or an end-of-file condition is encountered. A null byte shall be written
immediately after the last byte read into the array. If the end-of-file condition is encountered before any bytes are
read, the contents of the array pointed to by s shall not be changed.
The fgets() function may mark the last data access timestamp of the file associated with stream for update. The last
data access timestamp shall be marked for update by the first successful execution of fgetc(), fgets(), fread(),
fscanf(), getc(), getchar(), getdelim(), getline(), gets(), or scanf() using stream that returns data
not supplied by a prior call to ungetc().
Return value
Upon successful completion, fgets() shall return s. If the stream is at end-of-file, the end-of-file indicator for the
stream shall be set and fgets() shall return a null pointer. If a read error occurs, the error indicator for the
stream shall be set, fgets() shall return a null pointer and shall set errno to indicate the error.
Errors
Refer to fgetc.
Tests
Untested
Known bugs
None