Shell script to find the factorial of a given no.

SOURCECODE:

echo “Enter the no:“

read n

i=1

a=1

d=0

if [ $n –eq $d ]

then

     echo $a

else

while [ $i –le  $n ]

do

            a=`expr $a \* $i`

            i=`expr $i + 1`

done

fi

echo “Ans:“ $a

OUTPUT:

Enter the no:

4

Ans:24