Check if 29 is prime and print Prime or Not Prime.
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using System;
class Program
{
static void Main()
{
int n = 29;
bool isPrime = n > 1;
for (int i = 2; i * i <= n && isPrime; i++)
if (n % i == 0) isPrime = false;
Console.WriteLine(isPrime ? "Prime" : "Not Prime");
}
}Prefer Coach (Nudge → Guide → Approach) before revealing. No forced signup.
Loop only to sqrt(n) (here i*i <= n)—efficient prime test for interviews.
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