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Top Forums Shell Programming and Scripting Converting from Centigrade to Fahrenheit and vice versa. Post 302632031 by N1ckNak on Sunday 29th of April 2012 12:57:46 PM
Old 04-29-2012
I'm sorry, where would that code go? Would I be ommiting anything from my script? It would be great if you could copy my script and add or remove things as necessary, if that isn't too much trouble. It just helps me to see your thinking faster and better. As it stands when I run the program I have to pick between the 11 numbers which doesn't seem right, it should just run through the input file. The other problem then is that I can only choose one number. I assume that if we can figure out how to fix the having to pick numbers from the keyboard problem the other problem will fix as well.

---------- Post updated 04-29-12 at 12:57 PM ---------- Previous update was 04-28-12 at 10:13 PM ----------

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 : "
   echo " Centigrade Temperature      Fahrenheit Temperature " > $output
  print_dash_line >> $output
while read ct
 do
    ft=$(echo "scale=2;((9/5) * $ct) +32" |bc)
    echo "             $ct                        $ft " >> $output
    print_dash_line >> $output
  done < "$input"
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

I made the changes in red. Now I get a syntax error. Any ideas on your end?

Last edited by N1ckNak; 04-28-2012 at 11:51 PM..
 

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line(1) 						      General Commands Manual							   line(1)

NAME
line - Reads one line from standard input SYNOPSIS
line STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: line: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
None DESCRIPTION
The line command copies one line, up to and including a newline, from standard input and writes it to standard output. Use this command within a shell command file to read from your terminal. The line command always writes at least a newline character. NOTES
The line utility has no internationalization features and is marked LEGACY in XCU Issue 5. Use the read utility instead. EXIT STATUS
Success. End-of-File. EXAMPLES
To read a line from the keyboard and append it to a file, enter: echo 'Enter comments for the log:' echo ': c' line >>log This shell procedure displays the message: Enter comments for the log: It then reads a line of text from the keyboard and adds it to the end of the file log. The echo ': c' command displays a : (colon) prompt. See the echo command for information about the c escape sequence. SEE ALSO
Commands: echo(1), ksh(1), read(1), Bourne shell sh(1b), POSIX shell sh(1p) Functions: read(2) Standards: standards(5) line(1)
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