C#中的“new”關鍵字有什麼作用?


使用new關鍵字建立陣列例項−

int [] a = new int[5];

new運算子用來建立物件或例項化物件。在此示例中,使用new為類建立物件−

示例

 即時演示

using System;

namespace CalculatorApplication {
   class NumberManipulator {
      public void swap(int x, int y) {
         int temp;

         temp = x; /* save the value of x */
         x = y; /* put y into x */
         y = temp; /* put temp into y */
      }
      static void Main(string[] args) {
         NumberManipulator n = new NumberManipulator();

         /* local variable definition */
         int a = 100;
         int b = 200;
         Console.WriteLine("Before swap, value of a : {0}", a);
         Console.WriteLine("Before swap, value of b : {0}", b);
         /* calling a function to swap the values */
         n.swap(a, b);
         Console.WriteLine("After swap, value of a : {0}", a);
         Console.WriteLine("After swap, value of b : {0}", b);
         Console.ReadLine();
      }
   }
}

輸出

Before swap, value of a : 100
Before swap, value of b : 200
After swap, value of a : 100
After swap, value of b : 200

更新於:20-06-2020

776次觀看

開啟您的職業

完成課程以獲得認證

開始
Advertisement