Unix Shell Programming Example for B.Sc, B.Tech, BCA, MCA

 5. Find out the factorial of a number.

PROGRAM:

echo "Enter the number:"

read n

fact=1

if [ $n -eq 0 ]

then

    echo "fact = "1

else

   

        for i in `seq 1 $n`

        do

            fact=`expr $fact \* $i`

        done

        echo "fact = $fact"

fi

OUTPUT:

[bgc@localhost ~]$ sh 6.sh

Enter the number:

3

fact = 6

[bgc@localhost ~]$ sh 6.sh

Enter the number:

2

fact = 2

[bgc@localhost ~]$ sh 6.sh

Enter the number:

0

fact = 1

[bgc@localhost ~]$