GREATEST OF THREE NUMBERS unix lab

GREATEST OF THREE NUMBERS

AIM:

            To write a shell program to find the greatest of three Numbers.

ALGORITHM:

Step 1: Start

Step 2: Read the value of ‘a’, ‘b’ and ‘c’

Step 3: Check if ‘a’ is greater than ‘b’ and ‘a’ is greater than ‘c’

Step 4: Then print “A is Greater”

Step 5: If Step 3 is not satisfied check if ‘b’ is greater than ‘c’

Step 6: Then print “B is Greater”

Step 7: Else Print “C is greater”

Step 8: Stop.

SHELL PROGRAM:

echo "Enter Three Numbers"

read a b c

if [ $a -gt $b -a $a -gt $c ]

then

echo "$a is Greater"

elif [ $b -gt $c ]

then

echo "$b is Greater"

else

echo "$c is Greater"

fi

SAMPLE OUTPUT:

Enter Three Numbers

12 14 16

16 is Greater

RESULT:

            Thus the program to find the greatest of three Numbers was executed and the output was verified.