07-05-2011
Many thanks, Corona688.
I just curious what does it really mean in "strncmp(buf, "@HWI", 4) == 0" and "fputs(buf, fout);" that you use in your source code?
I can't really get how to use string compare function in this case.
Many thanks for advice
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FPUTS(3) BSD Library Functions Manual FPUTS(3)
NAME
fputs, puts -- output a line to a stream
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
int
fputs(const char *restrict s, FILE *restrict stream);
int
puts(const char *s);
DESCRIPTION
The function fputs() writes the string pointed to by s to the stream pointed to by stream.
The function puts() writes the string s, and a terminating newline character, to the stream stdout.
RETURN VALUES
The functions fputs() and puts() return a nonnegative integer on success and EOF on error.
ERRORS
[EBADF] The stream argument is not a writable stream.
The functions fputs() and puts() may also fail and set errno for any of the errors specified for the routines write(2).
COMPATIBILITY
fputs() now returns a non-negative number (as opposed to 0) on successful completion. As a result, many tests (e.g., "fputs() == 0",
"fputs() != 0") do not give the desired result. Use "fputs() != EOF" or "fputs() == EOF" to determine success or failure.
SEE ALSO
ferror(3), fputws(3), putc(3), stdio(3)
STANDARDS
The functions fputs() and puts() conform to ISO/IEC 9899:1990 (``ISO C90''). While not mentioned in the standard, both fputs() and puts()
print '(null)' if str is NULL.
BSD
June 4, 1993 BSD