Sponsored Content
Top Forums Shell Programming and Scripting Perl code to differentiate numeric and non-numeric input Post 302109225 by anbu23 on Monday 5th of March 2007 01:46:19 AM
Old 03-05-2007
Quote:
Originally Posted by Yogesh Sawant
i don't intend to flame you, but wish to point out a few deficiencies in your code - it doesn't consider negative numbers, and real numbers, in current form, it is identifying natural numbers, along with zero
Code:
#!/usr/bin/perl

print "Enter a term: ";
$input = <STDIN>;
print "\n";

if ( $input =~ /^[\+-]*[0-9]*\.*[0-9]*$/ && $input !~ /^[\. ]*$/  ) {
print "$Input is numeric\n";
}
else {
print "$Input is non-numeric\n";
}


Last edited by anbu23; 03-05-2007 at 04:57 AM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to check for a valid numeric input

Hi Folks, I'm using bash script. I would like to check whether input is a number or not.(Only positive numbers).. if space or non numeric is entered, it should say "invalid input". pls help.. thanks in adv. Br/// Vijay. (1 Reply)
Discussion started by: Vijayakumarpc
1 Replies

2. Shell Programming and Scripting

validating a input file for numeric and character

i have a input file like this 001|rahim|bajaj|20090102 while reading the file i need to check whether the first column is a number second column is a name is there any methodology to check for the same thanks in advance (2 Replies)
Discussion started by: trichyselva
2 Replies

3. Shell Programming and Scripting

Check for Numeric output in Perl

Hi All, I would like to convert my below csh script to Perl. Can any expert help ? # To check for numeric input set tested1 = `echo "$tested"| awk '/^+$/'`; # To remove un-neccessary zeros set tested2 = `echo "$tested"|awk '{print $0+0}'`; (3 Replies)
Discussion started by: Raynon
3 Replies

4. Shell Programming and Scripting

Checking input for being numeric and integers

Hi, I'm trying to check to see that the arguments given to my script are both numeric and positive integers. I'm using tcsh. I figured out the positive part, but I am having trouble with the arguments being numeric and integers I have no idea where to get started with the checking them actually... (1 Reply)
Discussion started by: mistykz
1 Replies

5. UNIX for Dummies Questions & Answers

Find and Replace random numeric value with non-numeric value

Can someone tell me how to change the first column in a very large 17k line file from a random 10 digit numeric value to a non numeric value. The format of lines in the file is: 1702938475,SNU022,201004 the first 10 numbers always begin with 170 (6 Replies)
Discussion started by: Bahf1s
6 Replies

6. Shell Programming and Scripting

Perl script to sort data on second numeric field

Hi, I'm a learner of PERL programming. I've a input file with the below data: SWAT_5, 1703, 2010-09-21 SWAT_6, 2345, 2010-09-21 SWAT_7, 1792, 2010-09-21 SWAT_8, 1662, 2010-09-21 SWAT_9, 1888, 2010-09-21 VXHARP_1, 171, 2010-09-21 I need to sort this data based on the second... (6 Replies)
Discussion started by: ganapati
6 Replies

7. Programming

Perl : Numeric Range Pattern Matching

hi Experts just wondering if you can help me check a number between a specific range if i have an ip address , how can i say the valid number for ip between 1 to 254 something like this if ($ip ) =~ /.../ { } what the pattern i need to type thanks (3 Replies)
Discussion started by: doubando
3 Replies

8. Shell Programming and Scripting

String variable to numeric conversion in perl

Hi guys I am having this strange issue.Well my requirement is like below Compare two values between flat file and oracle DB Via perl script I am easily getting the rowcount Now I connect sql plus via perl and the column value that returns is string my $sqlplus_settings = ''; my... (7 Replies)
Discussion started by: Pratik4891
7 Replies

9. Windows & DOS: Issues & Discussions

Put the numeric validation in user input when value is 5.1.2.3

Hi I need to put the validation in batch script when user will enter the build number it should be numeric.I can put the validation for numeric values but there is .(dot) in number so it would not take it as numeric. Is it possible we can store it in variable and remove the .(dot) from the... (1 Reply)
Discussion started by: anuragpgtgerman
1 Replies

10. Shell Programming and Scripting

Check whether input is numeric

Hello there, find below for my code first: $pdp_asaba=`cat /tmp/temp_total | grep asaba | sed 's/*//g'` if ]] then pdp_asaba=0 fi $pdp_abuja=`cat /tmp/temp_total | grep abuja | sed 's/*//g'` if ]] then pdp_abuja=0 fi $pdp_ojota=`cat /tmp/temp_total | grep ojota | sed 's/*//g'` if ... (3 Replies)
Discussion started by: infinitydon
3 Replies
PX_TIMESTAMP2STRING(3)					     Library Functions Manual					    PX_TIMESTAMP2STRING(3)

NAME
PX_timestamp2string -- Convert paradox timestamp into formated string SYNOPSIS
#include <paradox.h> char * PX_timestamp2string(pxdoc_t *pxdoc, double timestamp, const char *format) DESCRIPTION
Creates a string representation of a paradox timestamp as specified in the parameter format. The timestamp must be either retrieved with PX_get_data_double(3) after calling PX_get_record(3) or by simply using the double value in the pxval_t struct as returned by PX_retrieve_record(3). A timestamp contains both time and date information. The format string contains chars which stand for certain values of the date/time. The following table lists all available characters with a meaning. All other characters are being copied unmodified to the output string. If a special character shall not be interpreted it must be preceded with a backslash. Characters and their meaning in date/time format string Character Meaning Y year, numeric, 4 digits y year, numeric, 2 digits m month, numeric n month, numeric, no leading zeroes d day of the month, numeric j T{ day of the month, numeric, no leading zeros T} H hour, numeric, 24 hour format h hour, numeric, 12 hour format G T{ hour, numeric, 24 hour format, no leading zeroes T} g T{ hour, numeric, 12 hour format, no leading zeroes T} i minutes, numeric s seconds, numeric A AM/PM a am/pm L boolean for leap year RETURN VALUE
Returns pointer to string on success and NULL on failure. SEE ALSO
PX_time2string(3), PX_date2string(3) AUTHOR
This manual page was written by Uwe Steinmann uwe@steinmann.cx. PX_TIMESTAMP2STRING(3)
All times are GMT -4. The time now is 05:56 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy