数组

数组 arr =  { 9,2,42,12,34,0,-11,45};

数组的长度 = 8(个元素)

数组的第0个元素为 9

数组的第1个元素为2

...

数组的第N个元素为 N-1

using System;
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arr = { 9,2,42,12,34,0,-11,45};
            Console.WriteLine("arr={ 9,2,42,12,34,0,-11,45 }");
            Console.WriteLine("arr.Length = {0}", arr.Length);
            Console.WriteLine("arr[0] = {0}", arr[0]);
            Console.WriteLine("arr[1] = {0}", arr[1]);
            Console.WriteLine("..." );
            Console.WriteLine("arr[7] = {0}", arr[7]);
            Console.ReadLine();
        }
    }
}

找出一个数组中的最大值

using System;
namespace ConsoleApplication1
{
    class Program
    {
        static int Max(int[] arr)
        {
            int maxValue = arr[0];
            for (int i = 0; i < arr.Length;i++ )
            {
                if (arr[i] > maxValue)
                    maxValue = arr[i];
            }
            return maxValue;
        }
        
        static void Main(string[] args)
        {
            int[] arr = { 9,2,42,12,34,0,-11,45};
            Console.WriteLine("max={0}", Max(arr));
            Console.ReadLine();
        }
    }
}