Prime number

Proposed exercise

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Write a program which asks the user for an integer number and answers if it is a prime number or not.

Output

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Solution

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using System;
public class Prime
{
public static void Main()
{
int number, divider=2;

Console.Write("Enter a number: ");
number = Convert.ToInt32(Console.ReadLine());

while( number % divider != 0)
divider++;

if (divider == number)
Console.WriteLine("Is prime!!!");
else    
Console.WriteLine("Is not prime!!!");
}
}