comment on

Here is a possibility. It checks whether anything in your input contains something else than digits or decimal point.
It fails with strings like '....' or '1.2.333.44..55' :

#!/usr/bin/perl -l
use strict;
my @inputs = ( qw[1 2 878787 777s7 3.4 3,4 77 abcdef ABCSDEF :: àéè !!
+!?]);
foreach (@inputs) {
    if ( m/[^0-9.]/ ) {print "$_ \tis not numeric";}
    else              {print "$_ \tis     numeric";}
}

__OUTPUT__
1     is     numeric
2     is     numeric
878787     is     numeric
777s7     is not numeric
3.4     is     numeric
3,4     is not numeric
77     is     numeric
abcdef     is not numeric
ABCSDEF is not numeric
::     is not numeric
àéè     is not numeric
!!!?     is not numeric
__END__
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pelagic
-------------------------------------
I can resist anything but temptation.

In reply to Re: How to check Inputs if Numeric by pelagic
in thread How to check Inputs if Numeric by kasmot

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