.Net基础篇_学习笔记_第六天_for循环语法_正序输出和倒序输出

for TAB  和 forr TAB

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

namespace 第六天_do_while循环
{
    class Program
    {
        static void Main(string[] args)
        {
            for (int i = 100; i <= 999; i++)
            {

                int bai = i/100;
                int shi = i%100/10;
                int ge = i%10;
                if (bai*bai*bai+shi*shi*shi+ge*ge*ge==i)
                {
                    Console.WriteLine("水仙花数有{0}",i);
                }
            }
            Console.ReadKey();
        }
    }
}

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

namespace 第六天_do_while循环
{
    class Program
    {
        static void Main(string[] args)
        {
            int sum = 0;
            int n = 100;
            for (int i = 1; i <=n; i+=2)
            {
                sum += i;
            }
            Console.WriteLine(sum);
            Console.ReadKey();
        }
    }

100以内所有偶数的和，所有奇数的和，所有整数的和......