2024-11-06

传递数组给函数

	using System;
	namespace ArrayApplication
	{
	class MyArray
	{
	double getAverage(int[] arr, int size)
	{
	int i;
	double avg;
	int sum = 0;
	for (i = 0; i < size; ++i)
	{
	sum += arr[i];
	}
	avg = (double)sum / size;
	return avg;
	}
	static void Main(string[] args)
	{
	MyArray app = new MyArray();
	/* 一个带有 5 个元素的 int 数组 */
	int [] balance = new int[]{1000, 2, 3, 17, 50};
	double avg;
	/* 传递数组的指针作为参数 */
	avg = app.getAverage(balance, 5 ) ;
	/* 输出返回值 */
	Console.WriteLine( "平均值是： {0} ", avg );
	Console.ReadKey();
	}
	}
	}

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参数数组

	using System;
	namespace ArrayApplication
	{
	class ParamArray
	{
	public int AddElements(params int[] arr)
	{
	int sum = 0;
	foreach (int i in arr)
	{
	sum += i;
	}
	return sum;
	}
	}
	class TestClass
	{
	static void Main(string[] args)
	{
	ParamArray app = new ParamArray();
	int sum = app.AddElements(512, 720, 250, 567, 889);
	Console.WriteLine("总和是： {0}", sum);
	Console.ReadKey();
	}
	}
	}

  要注意的是

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Array类

  值得注意的是Array.Sort() 方法会直接修改原数组