Print prime number program

 Consider the following program with explanation 

1. using System;  
2.   
3. namespace PrimeNumber  
4. {  
5.     class Program  
6.     {  
7.         static void Main(string[] args)  
8.         {  
9.             Console.WriteLine("Enter a number");  
10.             int number = Convert.ToInt32(Console.ReadLine());  
11.             int result = Check_Prime(number);  
12.             if (result == 0)  
13.             {  
14.                 Console.WriteLine("{0} is not a prime number", number);  
15.             }  
16.             else  
17.             {  
18.                  Console.WriteLine("{0} is  a prime number", number);  
19.             }              
20.             Console.Read();  
21.         }   
22.   
23.         private static int Check_Prime(int number)  
24.        {  
25.             int i;  
26.             for (i = 2; i <= number - 1; i++)  
27.             {  
28.                 if (number % i == 0)  
29.                 {  
30.                     return 0;  
31.                 }  
32.             }  
33.             if (i == number)  
34.             {  
35.                 return 1;  
36.             }  
37.             return 0;  
38.         }  
39.     }    
40. } 
    

If you apply static keyword with any method, it is known as static method. A static method belongs to the class rather than the OBJECT OF A CLASS. A static method can be invoked without the need for creating an instance of a class. A static method can access static data member and can change the value of it.