C# - 關係運算符

下表顯示了 C# 支援的所有關係運算符。假設變數A持有 10，變數B持有 20，則 -

示例

以下示例演示了 C# 中可用的所有關係運算符 -

using System;

class Program {
   static void Main(string[] args) {
      int a = 21;
      int b = 10;
      
      if (a == b) {
         Console.WriteLine("Line 1 - a is equal to b");
      } else {
         Console.WriteLine("Line 1 - a is not equal to b");
      }
      
      if (a < b) {
         Console.WriteLine("Line 2 - a is less than b");
      } else {
         Console.WriteLine("Line 2 - a is not less than b");
      }
      
      if (a > b) {
         Console.WriteLine("Line 3 - a is greater than b");
      } else {
         Console.WriteLine("Line 3 - a is not greater than b");
      }
      
      /* Lets change value of a and b */
      a = 5;
      b = 20;
      
      if (a <= b) { 
         Console.WriteLine("Line 4 - a is either less than or equal to  b");
      }
      
      if (b >= a) {
         Console.WriteLine("Line 5-b is either greater than or equal to b");
      }
   }
}

當以上程式碼編譯並執行時，它會產生以下結果 -

Line 1 - a is not equal to b
Line 2 - a is not less than b
Line 3 - a is greater than b
Line 4 - a is either less than or equal to b
Line 5 - b is either greater than or equal to b