12-16-2008
Searching for exact match in a string ??
Hi
I have a string of the form XY_X1998.10.500.
I want to check in a script that the middle part is always 10. How to achieve this?
e.g the input can be XY_X1998.20.500 OR XY_X1998.50.500
OR XY_X1998.10.500.
I have to print Yes everytime the middle value is 10 and NO when the middle value is other than 10.
Please help.
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GCVT(3) Linux Programmer's Manual GCVT(3)
NAME
gcvt - convert a floating-point number to a string
SYNOPSIS
#include <stdlib.h>
char *gcvt(double number, size_t ndigit, char *buf);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
gcvt():
Since glibc 2.12:
_SVID_SOURCE ||
(_XOPEN_SOURCE >= 500 ||
_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED) &&
!(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
Before glibc 2.12:
_SVID_SOURCE || _XOPEN_SOURCE >= 500 || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
DESCRIPTION
The gcvt() function converts number to a minimal length null-terminated ASCII string and stores the result in buf. It produces ndigit sig-
nificant digits in either printf(3) F format or E format.
RETURN VALUE
The gcvt() function returns the address of the string pointed to by buf.
CONFORMING TO
Marked as LEGACY in POSIX.1-2001. POSIX.1-2008 removes the specification of gcvt(), recommending the use of sprintf(3) instead (though
snprintf(3) may be preferable).
SEE ALSO
ecvt(3), fcvt(3), sprintf(3)
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
2010-09-20 GCVT(3)