What are the relational operators in C#

using System; //from  w w w.j a v  a 2  s. co  m
 
class Example {    
  public static void Main() {    
    int i, j; 
 
    i = 10; 
    j = 11; 
    if(i < j) 
       Console.WriteLine("i < j"); 
    if(i <= j) 
       Console.WriteLine("i <= j"); 
    if(i != j) 
       Console.WriteLine("i != j"); 
    if(i == j) 
       Console.WriteLine("this won't execute"); 
    if(i >= j) 
       Console.WriteLine("this won't execute"); 
    if(i > j) 
       Console.WriteLine("this won't execute"); 
 
  }    
}

/*www . j av  a 2s  . c  o m*/
using System;

class MainClass
{
  static void Main(string[] args)
  {
    int a = 10, b = 20, c = 30;

    if (a < 15 && b < 20)
      c = 10;
        Console.WriteLine(c);

    if (a < 15 || b < 20)
      c = 15;
        
        Console.WriteLine(c);

    if (!(a == 15))
      c = 25;
      
        Console.WriteLine(c);
  }
}