Centigrade to Fahrenheit and Fahrenheit to Centigrade Conversion > Unix Shell Programming

Centigrade to Fahrenheit and Fahrenheit to Centigrade Conversion

Code:

clear
i=0

while test $i -eq 0
do
echo "                 Menu"
echo "....................................."
echo
echo "1.     Centigrade to Fahrenheit."
echo "2.     Fahrenheit to Centigrade."
echo "3.     Exit."
echo
echo
echo -n "Enter your choice==> "
read ch

case $ch in
	1)
		i=1
		echo -n "Enter the Centigrade value==> "
		read c

		a=`expr $c \* 9`
		b=`expr $a + 160`
		f=`expr $b / 5`

		echo $c"C = " $f"F" ;;
	2)
		i=1
		echo -n "Enter the Fahrenheit value==> "
		read f

		a=`expr $f - 32`
		b=`expr $a \* 5`
		c=`expr $b / 9`

		echo $f"F = " $c"C" ;;
	3)
		i=1
		exit ;;
	*)
		echo "Please select a valid option."
		echo
		echo ;;
esac
done

Output:

                 Menu
.....................................

1.     Centigrade to Fahrenheit.
2.     Fahrenheit to Centigrade.
3.     Exit.

Enter your Choice==> 1

Enter the Centigrade value==> 100

100C = 212F

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