Check whether the number entered is prime or not?

Kmandapalli
Posted by Kmandapalli under C# category on | Points: 40 | Views : 555
public static void Main()
{
Console.Write("Enter a Number : ");
int num;
num = Convert.ToInt32(Console.ReadLine());
int k;
k = 0;
for (int i = 1; i <= num; i++)
{
if (num % i == 0)
{
k++;
}
}
if (k == 2)
{
Console.WriteLine("Entered Number is a Prime Number and the Largest Factor is {0}",num);
}
else
{
Console.WriteLine("Not a Prime Number");
}
Console.ReadLine();
}

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