Help with reading and calling a command in a script

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# 1  
Old 12-04-2013
Help with reading and calling a command in a script

The problem I am having now is calling and reading a command and The Main script reads the data file and passes the input to the two calculation scripts, and than output to a file.
The contents of the input data file shown below:
Sample output of the data that would follow your output header.

Centigrade Temperature Fahrenheit Temperature
-------------------------------- ---------------------------------
1 33.80
8 46.40
22 71.60
43 109.40
89 192.20
283 541.40
120 248.00
212 413.60
1043 1909.40
100 212.00
287 548.60

Fahrenheit Temperature Centigrade Temperature
-------------------------------- ---------------------------------
1 -17.22
8 -13.33
22 -5.55
43 6.11
89 31.66
283 139.44
120 48.88
212 100.00
1043 561.66
100 37.77
287 141.66

The Main Script
echo "*** Converting between the different temperature scales ***"
echo "1. Convert Celsius temperature into Fahrenheit"
echo "2. Convert Fahrenheit temperature into Celsius"
echo "Select your choice (1-2): "
read choice
case "$choice" in
   echo "Centigrade Temperature      Fahrenheit Temperature " > ${output};
   echo "-----------------------      -----------------------" >> ${output}
   CtoF $var
   echo "Fahrenheit Temperature      Centigrade Temperature " > ${output}
   echo "-----------------------      -----------------------" >> ${output}
   FtoC $var
   echo "Please select 1 or 2"
   exit 1


echo -e "******************Calculating Celsius into Fahrenheit********"
echo -n "Enter temperature (C) : "
read tc
# formula Tf=(9/5)*Tc+32
tf=$(echo "scale=2;((9/5) * $tc) + 32" |bc)
echo "$tc C = $tf F"

echo -e "**************Calculating Fahrenheit into Celsius*********"
echo -n "Enter temperature (F) : "
read tf
#formula Tc=(5/9)*(Tf-32)
tc=$(echo "scale=2;(5/9)*($tf-32)" |bc)
echo "$tf = $tc"

# 2  
Old 12-04-2013
You can do this in one script.
# 3  
Old 12-04-2013
Originally Posted by blackrageous
You can do this in one script.
The professor has specifically said that you have to make 3 Scripts, One the main script, and the other two are calculations.
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