【C#】奇偶数求和

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最新推荐文章于 2023-11-27 11:05:29 发布

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分类专栏： C#

本文链接：https://blog.youkuaiyun.com/qq_43618700/article/details/126450748

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C#编程数学计算奇偶项序列求和算法实现

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using System;

namespace OddEvenNumber
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.Write("请输入m的值：");
            int m=Int32.Parse(Console.ReadLine());
            long oddSum = 0, evenSum = 0, result;
            int oddNumber = 0, evenNumber = 0;//项数

            if (m % 2 == 0)
            {
                oddNumber = m / 2;
                evenNumber = oddNumber;
            }
            else if((m+1)%2==0)
            {
                oddNumber = (m + 1) / 2;
                evenNumber = oddNumber - 1;
            }

            for (int i = 1; i <= oddNumber; i++)
            {
                int temp = 2 * i - 1;
                oddSum += temp;
                //Console.WriteLine(oddSum);
            }

            for (int j = 1; j <= evenNumber; j++)
            {
                int temp = 2 * j;
                evenSum += temp;
                //Console.WriteLine(evenSum);
            }

            result = oddSum - evenSum;
            Console.WriteLine("1-2+3-4+ …… +{0}= {1}", m, result);
            Console.ReadLine();
        }
    }
}