C#知识点整理 教学程序

using System; using System.Windows.Forms; public class text { static string output = ""; static void printArray(int[] arr) { for (int i = 0; i < arr.Length; i++) { output += arr[i] + " "; if (i == arr.Length - 1) output += "\n"; } } public static void Main() { int[] array = new int[] { 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 }; int[] number = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; int[] number1 = new int[] { 8, 8, 8, 2, 2, 2, 6, 6, 6, 6 }; int[] number2; number1 = number; number2 = number; output += "将number赋给number1和number2后number1\n"; printArray(number1); //打印命令，打印数组number1 output += "将number赋给number1和number2后number2\n"; printArray(number2); output += "将number赋给number1和number2后number\n"; printArray(number); output += "\n"; for (int i = 0; i < number1.Length; i++) //length到数组保存的当前元素总数 { if (i % 2 == 0) //隔一位显示一个零 number[i] = 0; } output += "修改number1后number1\n"; printArray(number1); output += "修改number1后number2\n"; printArray(number2); output += "修改number1后number\n"; printArray(number); output += "\n"; for (int i = 0; i < number.Length; i++) { if (i % 2 != 0) //为什么会显示0？ number[i] = 1; } output += "修改number1后number1\n"; printArray(number1); output += "修改number1后number2\n"; printArray(number2); output += "修改number1后number\n"; printArray(number); output += "\n"; number = array; //赋值 output += "将number引用另一个数组对象后number1\n"; printArray(number1); output += "将number引用另一个数组对象后number2\n"; printArray(number2); output += "将number引用另一个数组对象后number\n"; printArray(number); MessageBox.Show(output, "运行结果"); } }