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Full Discussion: Read from a file and compare
Top Forums Shell Programming and Scripting Read from a file and compare Post 302319581 by durden_tyler on Monday 25th of May 2009 10:17:11 PM
Old 05-25-2009
And if you have perl, then:

Code:
$ 
$ cat abc.lst
2343         
3214         
45654        
563456       
5436         
$            
$ cat readcmp.pl
#!/usr/bin/perl -w
print "Enter number to be compared : ";
chomp($num = <STDIN>);
open(LST,"abc.lst") or die "Can't open abc.lst: $!";
while (<LST>) {
  chomp;
  if ($_ < $num)    { printf("%8d is less than    %d\n",$_,$num) }
  elsif ($_ > $num) { printf("%8d is greater than %d\n",$_,$num) }
  else              { printf("%8d is equal to     %d\n",$_,$num) }
}
close(LST) or die "Can't close abc.lst: $!";

$
$ perl readcmp.pl
Enter number to be compared : 1234
    2343 is greater than 1234
    3214 is greater than 1234
   45654 is greater than 1234
  563456 is greater than 1234
    5436 is greater than 1234
$
$ perl readcmp.pl
Enter number to be compared : 50000
    2343 is less than    50000
    3214 is less than    50000
   45654 is less than    50000
  563456 is greater than 50000
    5436 is less than    50000
$
$ perl readcmp.pl
Enter number to be compared : 45654
    2343 is less than    45654
    3214 is less than    45654
   45654 is equal to     45654
  563456 is greater than 45654
    5436 is less than    45654
$

HTH,
tyler_durden
 

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LEARN ABOUT NETBSD

lldiv

DIV(3)							   BSD Library Functions Manual 						    DIV(3)

NAME

     div, ldiv, lldiv, imaxdiv -- quotient and remainder from division

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <stdlib.h>

     div_t
     div(int num, int denom);

     ldiv_t
     ldiv(long int num, long int denom);

     lldiv_t
     lldiv(long long int num, long long int denom);

     #include <inttypes.h>

     imaxdiv_t
     imaxdiv(intmax_t num, intmax_t denom);

DESCRIPTION

     These functions compute the value of num / denom and return the quotient and remainder in a specific divison structure.  The functions differ
     only with respect to the type of the return value and the parameters.

     The returned structure always contains two members named quot and rem, denoting the quotient and the remainder.  The type of these correspond
     with the underlying type of the function.

EXAMPLES

     The following example demonstrate the basic usage of the functions.

	   div_t d;

	   int a = 4321;
	   int b = 1234;

	   d = div(a, b);

	   (void)printf("%d %d
", d.quot, d.rem);

SEE ALSO

     fast_divide32(3), math(3), qdiv(3)

STANDARDS

     All described functions conform to ISO/IEC 9899:1999 (``ISO C99'').

BSD
								  April 13, 2011							       BSD
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