Use a parameter in a member function : Method Parameter « Class « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Class
3. Method Parameter

using System; 
 
class ChkNum {  
  // Return true if x is prime. 
  public bool isPrime(int x) { 
    for(int i=2; i <= x/i; i++) 
      if((x %i) == 0) return false; 
 
    return true; 
  } 
}  
  
class MainClass {  
  public static void Main() {  
    ChkNum ob = new ChkNum(); 
 
    for(int i=1; i < 10; i++) 
      if(ob.isPrime(i)) Console.WriteLine(i + " is prime."); 
      else Console.WriteLine(i + " is not prime."); 
 
  }  
}

1 is prime.
2 is prime.
3 is prime.
4 is not prime.
5 is prime.
6 is not prime.
7 is prime.
8 is not prime.
9 is not prime.