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Full Discussion: Converting from Centigrade to Fahrenheit and vice versa.
Top Forums Shell Programming and Scripting Converting from Centigrade to Fahrenheit and vice versa. Post 302632011 by N1ckNak on Saturday 28th of April 2012 08:49:55 PM
Old 04-28-2012
Converting from Centigrade to Fahrenheit and vice versa.
I need to write a script that will take the input from a file and convert the number from centigrade to fahrenheit and vice versa.
This is what I have but it doesn't seem to be correct.
Also the data file has 11 numbers inside of it and the output needs to be listed as so:
Code:
Fahrenheit Temperature                                       Centrigade Temperature
-----------------------                                       ---------------------
1                                                                      -17
----------------------                                         --------------------
3                                                                      -13
----------------------                                        ---------------------
89                                                                      31
----------------------                                       -----------------------
etc.

Code:
#!/bin/sh
print_dash_line()
{
#sub function to print dashes
echo "_ _ _ _ _ _ _ _ _ _ _ _        _ _ _ _ _ _ _ _ _ _ _ _ "
}
#***** Start of Main Program *****
#***** Assign Variables
input_file=data.file
output_file=ans.file
# formula ft=(9/5)*ct+32
# formula ct=(5/9)*(ft-32)
echo "1. Convert Centigrade temperature into Fahrenheit"
echo "2. Convert Fahrenheit temperature into Centigrade"
echo -n "Select your choice (1-2) : "
read choice
if [ $choice -eq 1 ]
then
   echo -n "Enter Centigrade Temperature : "
   set `cat $input_file`
   echo $1 $2 $3 $4
   read ct
   ft=$(echo "scale=2;((9/5) * $ct) + 32" |bc)
   echo " Centigrade Temperature        Fahrenheit Temperature " > $output_file
   print_dash_line  >> $output_file
   echo >> $output_file
   echo "          $ct                           $ft " >> $output_file
   print_dash_line >> $output_file
elif [ $choice -eq 2 ]
then
   echo -n "Enter Fahrenheit Temperature : "
   set `cat $input_file`
   echo $1 $2 $3 $4
   read ft
   ct=$(echo "scale=2; (5/9)*($ft-32)" |bc)
   echo " Fahrenheit Temperature        Centigrade Temperature " > $output_file
   print_dash_line  >> $output_file
   echo >> $output_file
   echo "          $ft                          $ct " >> $output_file
   print_dash_line >> $output_file
else
    echo "Please select 1 or 2"
    exit l
fi

Last edited by N1ckNak; 04-28-2012 at 10:00 PM..
 

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LEARN ABOUT DEBIAN

dpipe

DPIPE(1)						      General Commands Manual							  DPIPE(1)

NAME

       dpipe - bi-directional pipe command

SYNOPSIS

       dpipe [ command [ args ] ] = [ command [ args ] ]
       dpipe [ command [ args ] ] = [ command [ args ] ] [ = [ command [ args ] ] ] ...

DESCRIPTION

       dpipe  is  a  general tool to run two commands diverting the standard output of the first command into the standard input of the second and
       vice-versa.  It is the bi-directional extension of the | (pipe) syntax used by all the shells.  The = has been chosen as a metaphor of  two
       parallel  communication	lines  between	the commands.  It is also possible to concatenate several tools. Intermediate programs communicate
       using standard input and standard output with the preceding tool and alternate standard input and  output  (respectively  file  descriptors
       number  3  and  4) towards the following tool.  If an intermediate tool should process only the data flowing in one direction use { or } as
       suffix for the preceding = and prefix of the following one.
       This tool has been written as a tool for the Virtual Distributed Ethernet.

EXAMPLE

       dpipe a = b
       processes a and b are bidirectionally connected: stdin of a is connected to stdout of b and vice-versa
       dpipe a = b = c
       a and b are connected as above. Alternate stdin of b is connected to stdout of c and alternate stdout of b to stdin of c
       dpipe a =} b }= c
       This is a cycle of pipes: stdout of a is connected to stdin of b, stdout of b with stdin of c, and stdout of c to stdin of a
       dpipe a =} b }={ c {= d = e
       all the notations can be mixed together.  this is a -> b -> d -> c and back to a; alternate ports of d are connected to e

OPTIONS

       no options.

NOTICE

       Virtual Distributed Ethernet is not related in any way with www.vde.com ("Verband der Elektrotechnik, Elektronik  und  Informationstechnik"
       i.e. the German "Association for Electrical, Electronic & Information Technologies").

SEE ALSO

       vde_switch(1), vde_plug(1), vde_plug2tap(1), vdeq(1).  wirefilter(1).

AUTHOR

       VDE is a project by Renzo Davoli <renzo@cs.unibo.it>.

Virtual Distributed Ethernet					 December 6, 2006							  DPIPE(1)
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