07-10-2021, 09:56 AM
Code:
#storing the number to be checked
number=43
i=2
#flag variable
f=0
#running a loop from 2 to number/2
while test $i -le `expr $number / 2`
do
#checking if i is factor of number
if test `expr $number % $i` -eq 0
then
f=1
fi
#increment the loop variable
i=`expr $i + 1`
done
if test $f -eq 1
then
echo "Not Prime"
else
echo "Prime"
fi