Shell Script Program To Check Number is Prime Or Not
echo Enter a number
read num
i=2
flag=1
while [ $i -lt $num ]
do
a=`expr $num % $i`
if [ $a -eq 0 ]
then
flag=0
fi
i=`expr $i + 1`
done
if [ $flag -eq 0 ]
then
echo $num is not a Prime number
else
echo $num is a Prime number
fi
there is an error in this logic.. loop must be stooped with break when flag is found 0 or otherwise it will keep number checking for next iteration and result will be irrelevant...
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