SHELL UNIX-LINUX PROGRAM TO IMPLEMENT CASE STRUCTURE

echo "1. Addition"

echo "2. Subtraction"

echo "3. Multiplication"

echo "4. Division"

echo "Please enter your choice:"

read choice

echo "Enter the first value:"

read a

echo "Enter the second value:"

read b

case $choice in
1) sum=`expr $a + $b`
echo "Sum of $a and $b is " $sum
;;

2) diff=`expr $a - $b`
echo "Difference of $a and $b is " $diff
;;

3) prod=`expr $a \* $b`
echo "Product of $a and $b is " $prod
;;

4) div=`expr $a / $b`
echo "Divions of $a and $b is " $div
;;

*) echo "Invalid option selected!"

Esac


program to implement case structure

Output:

[csuser@localhost ~]$ vi ma
[csuser@localhost ~]$ chmod 777 ma
[csuser@localhost ~]$ ./ma
1. Addition
2. Subtraction
3. Multiplication
4. Division
Please enter your choice:
1
Enter the first value:
2
Enter the second value:
3
Sum of 2 and 3 is  5