#!/bin/bash

echo -n "Enter a number: "
read n
p=2

while [ $p -lt $n ]
do
if [ `expr $n % $p` -eq 0 ]
then
echo "The number $n is not a prime"
exit
fi
p=`expr $p + 1`
done

echo "The number $n is a prime "
=====
See Output

* New Project-201 70329日ロ+ « Execute ! > Share Code main.sh root 2 3 echo-n Enter a number: 4 read n 5 p-2 main.sh 7 while

=====

#include <math.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
int n, i, isPrime = 0;

printf("Enter a number:");
scanf("%d",&n);

for(i=2; i<=n/2; ++i)
{

if(n%i==0)
{
isPrime=1;
break;
}
}

if (isPrime==0)
printf("The number %d is a prime.",n);
else
printf("The number %d is not a prime.",n);

return 0;
}


====
See Output

*New Project-201 70329 日ロ+《 웜 compile ! Execute ! > Share Code main.cx root 4 int mainO main.c intn, i, isPrime-0; 7 printf(

Thanks, let me know if there is any concern.