Integer_Type fclose (File_Type fp)
The fclose function may be used to close an open file pointer
fp. Upon success it returns zero, and upon failure it sets
errno and returns -1. Failure usually indicates a that
the file system is full or that fp does not refer to an open file.
Many C programmers call fclose without checking the return
value. The S-Lang language requires the programmer to explicitly
handle any value returned by a S-Lang function. The simplest way to
handle the return value from fclose is to use it as:
- slangrtl
-
clearerr,
close,
errno,
errno_string,
fdopen,
feof,
ferror,
fflush,
fgets,
fgetslines,
fileno,
fopen,
fputs,
fread,
fseek,
ftell,
fwrite,
getcwd,
isatty,
mkdir,
open,
pclose,
popen,
rename
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