C Sharp

Q. 1 What is Prime Number?

Answer :  A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. 

Q. 2 Write a programmer in C# to check number is prime or not ?

Answer : The following code snippet  to check prime number or not.

 using System;
 namespace PrimeNumber 
 { 
  class Program   
    {  
   static void Main(string[] args)     
       { 
   private static int Check_Prime(int number)
       {
      Console.WriteLine("Enter a number");   
      int number = Convert.ToInt32(Console.ReadLine());  
       int result = Check_Prime(number);  
       if (result == 0) 
        {  
         Console.WriteLine("{0} is not a prime number", number);           
          }   else          
            {  
          Console.WriteLine("{0} is  a prime number", number);             
      }              
           Console.Read(); 
    }  
    int i;
    for (i = 2; i <= number - 1; i++)
            {
    if (number % i == 0)
       {
  return 0;
         }
      }
  if (i == number)
            {
  return 1;
            }
  return 0;
        }
    }  
}