第十八节 数组（一）

数组：具有相同类型的一组数据叫做数组。

int  [] scores = {};

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ShuZu
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] scores = { 1,3,5,7,9};
            scores[0] = 2;
            int sum = scores[0] + scores[1] + scores[2] + scores[3] + scores[4];
            Console.WriteLine(sum);
        }
    }
}

　　

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ShuZu
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] scores = { 1,3,5,7,9};
            int sum=0;
            for (int i=0; i < scores.Length; i++)
            {
                Console.WriteLine(scores[i]);
                sum=sum+scores[i];
            }
            Console.WriteLine("和为"+sum);
            float average = sum / scores.Length;
            Console.WriteLine("平均数为"+average);
        }
    }
}

　　

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ShuZu
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] shu = new string[3] {"张三","李四","王五"};
            Console.WriteLine("我有[0]位朋友", shu.Length);
            for (int i = 0; i < shu.Length; i++)
            {
                Console.WriteLine(shu[i]);
            }
        }
    }
}

　　foreach语句

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ShuZu
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] shu = new string[3] {"张三","李四","王五"};
           
            foreach(string name in shu)
            {
                Console.WriteLine(name);
            }
        }
    }
}