c#经典程序.docx

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApplication3 /*class Program static void Main(string args) for (int i = 1; i = 9; i+) for (int j = 1; j = i; j+) Console.Write(0*1=2t, i, j, i * j); Console.WriteLine(n); Console.ReadKey(); */ /* class fengjie static void Main() Console.Write(输入你要分解的数字:); int p =Convert.ToInt32(Console.ReadLine(); /Console.Write(p); for(int i=2;i= a & c = A & c = 0 & c = 9) j+; else k+; Console.Write(0,1,2, i, j, k); Console.ReadKey(); */ /*class paixu static void Main() Console.WriteLine(输入你要排序数的个数); int n; n = int.Parse(Console.ReadLine(); int a = new intn; Console.WriteLine(请一次输入你要排序的数字an回车结束); string strings=new stringn; for (int i = 0; i n; i+) stringsi = Console.ReadLine(); for (int i = 0; i n; i+) ai =Convert.ToInt32(stringsi); for (int i = 0; i = n; i+) for (int j = i + 1; j n; j+) int temp; if (ai aj) temp = aj; aj = ai; ai = temp; Console.WriteLine(排序的结果为:); for (int i = 0; i 1 ) Console.WriteLine(输入一个数字); double p = Double.Parse(Console.ReadLine(); int h = (int)p; int w; if (p - h) = 0.5) w = h + 1; else w = h; Console.WriteLine(w); Console.ReadKey(); */ /* class jisuan public static void Main() double i = 1; double sum = 1; while (i =99) sum =sum+i / (i + 1); i+; Console.WriteLine(sum); Console.ReadKey(); */ /* struct student public int age; public string name; public string address; ; class shuz public static void Main() student sd; sd.age = 19; = xiaoxiao; sd.address = gansu; Console.WriteLine(0,1,2, sd.age, , sd.address); Console.ReadKey(); */ /* class sum public static void Main() int i=0, sum; sum = 0; do sum += i; i+; while (i = 100); Console.WriteLine(sum); Console.ReadKey(); */ /*class bijiao public static void Main() Console.WriteLine(输入两个数字); double a = double.Parse(Console.ReadLine(); double b = double.Parse(Console.ReadLine(); double min = Math.Min(a, b); double max = Math.Max(a, b); Console.WriteLine(min=0,max=1, min, max); Console.ReadKey(); */ /* class pingfanghe public static void Main() double sum = 0; int i = 0; while (i 10) sum += Math.Pow(i, 2); i+; Console.WriteLine(sum); Console.ReadKey(); */ /* class 水仙花 public static void Main() int i, j, k;int h=0; for (int a = 100; a 1000; a+) i = a / 100; j = a / 10%10; k = a %10; if(a=Math.Pow(i,3)+Math.Pow(j,3)+Math.Pow(k,3) Console.Write( +a); h+; if (h % 5 = 0) Console.WriteLine(n); Console.ReadKey(); */ /*class 素数 public static void Main() int i, j; int d = 0; bool flag; for (i = 2; i 1000; i+) flag = true; for (j = 2; j i / 2; j+) if (i % j = 0) flag = false; break; if (flag = true) Console.Write( + i); d+; if (d % 5 = 0) Console.WriteLine(n); Console.ReadKey(); */ /*class jiafa public static void Main() int i = 0, j = 0, sum = 0; int h = 0; while (i 100) while (j 100) h+= j; j+; sum += j; i+; Console.WriteLine(sum); Console.ReadKey(); */ /* public struct admin public string name; public string possword; class 登陆系统 public static void Main() admin a = new admin(); int i = 0; = 李文童; a.possword = 198722; string names, posswords; while (i 3) Console.WriteLine(请输入用户名：); names = Console.ReadLine(); Console.WriteLine(请输入密码：); posswords = Console.ReadLine(); if ( = names & a.possword = posswords) Console.WriteLine(登陆中 ); else Console.WriteLine(用户名或者密码错误,请重新输入); i+; Console.ReadKey(); */ /*class he public static void Main() double s = 0; double i = 1; while (s 2000) s =s+ Math.Pow(i, 2); i+; Console.WriteLine(i); Console.ReadKey(); */ /* class 斐波那契数列 public static void Main() int f1 = 0; int f2 = 1; int f3; while (f1 = 0) double d = (-b) + Math.Sqrt(Math.Pow(b, 2) - 4 * a * c) / (2 * a); double e = (-b) - Math.Sqrt(Math.Pow(b, 2) - 4 * a * c) / (2 * a); Console.Write(这个一一元二次方程的解是 + d + + e); else Console.Write(不存在); Console.ReadKey(); */ /* class sushu /1-200之内的素数 public static void Main() int i = 2, j ; int d = 0; bool b; while (i 200) b = true; j = 2; while (j =i/2) if (i % j = 0) b = false; break; j+; if (b =true) Console.Write( + i); d+; if (d % 5 = 0) Console.WriteLine(n); i+; Console.WriteLine( + d); Console.ReadKey(); */ /* class bianhu public static void Main() Console.WriteLine(输入一个数字); int a = (int)double.Parse(Console.ReadLine(); int b = a % 10; int c = (int)a /10%10 ; int d = a /100; Console.WriteLine(0,1,2, b, c, d); Console.ReadKey(); */ / /* /素数 /* / /* class sushu public static void Main() int i = 2; int j; int d = 0; bool b; while (i 200) b = true; j = 2; while (j = i / 2) if (i % j = 0) b = false; break; j+; if (b = true) Console.Write( + i); d+; if (d % 5 = 0) Console.WriteLine(n); i+; Console.Write(d); Console.ReadKey(); */ /* class sushu public static void Main() bool b; int d=0; for (int i = 2; i = 200; i+) b = true; for (int j = 2; j = i / 2; j+) if (i % j = 0) b = false; break; if (b = true) Console.Write( + i); d+; if (d % 5 = 0) Console.WriteLine(n); Console.WriteLine(d); Console.ReadKey(); */ / /* /经典算法 鸡蛋问题 /* / /* class dan public static void Main() int num=5;/最大的是四个四个数 所以余一 取得最小值是 5； while (num 1000) if (num % 3 = 1 & num % 4 = 1 & num % 2 = 1) Console.Write( + num); num+; Console.ReadKey(); */ / /* /1-200奇数和 /* / /*class ji public static void Main() int sum = 0; int h = 0; for (int i = 0; i = 200; i+) if (i % 2 = 0) continue; else sum += i; h+; if(i%2!=0) sum+=i; Console.Write( + sum + + h); Console.ReadKey(); */ / /* /九九乘法表 /* / /* class s public static void Main() for (int i =1 ; i=9; i+) for (int j = 1; j=i; j+) Console.Write( +i + * + j + = + i * j); Console.WriteLine(n); Console.ReadKey(); */ / / 圣诞树程序 / /* class ChristmasTree static void Main(string args) Console.WriteLine(请输入一个数字，然后回车); string str = Console.ReadLine(); int c = Convert.ToInt32(str); /第一部分的图形 for (int i = 1; i = c; i+) for (int k = 0; k 2 * c - i; k+) Console.Write( ); for (int j = 1; j = 2 * i - 1; j+) Console.Write(*); Console.WriteLine(); /第二部分的图形 for (int m = 3; m = c; m+) for (int b = 0; b 2 * c - m; b+) Console.Write( ); for (int n = 1; n = 2 * m - 1; n+) Console.Write(*); Console.WriteLine(); if (m = c) for (m = c - 2; m c; m+) Console.Write( ); for (m = 0; m 3 * c; m+) Console.Write(*); Console.WriteLine(); /第三部分图形 for (int m = c - 2; m c; m+) for (int b = 1; b 2 * c; b+) Console.Write( ); for (int n = 1; n = 2; n+) Console.Write(*); Console.WriteLine(); Console.Write(请输入你想输出的字符串，按回车确认 + n); string h = Console.ReadLine(); Console.Write(你输入的字符串为： + h + n); */ / /倒三角程序 / /*class Trigon public static void Main() for (int i = 1, j = 0; i = 9; i+) for (j = 0; j = i; j+) Console.Write( ); for (int h =0 ; h =2*(9-i); h+) Console.Write(*); Console.WriteLine(); Console.ReadKey(); */ / /while循环输入十个数字 并比较大小 / /*class puts public static void Main() int d; int i = 0; int max1 = 0, s = 0; while (i 10) Console.Write(请输入第 + (i+1 )+ 个数:); d = int.Parse(Console.ReadLine(); if (max1 max1) / / max1 = s; / i+; Console.Write(最大数是: + max1); */ / /数组问题 数学最高成绩 / /*class math1 public static void Main() double math = new double10; Console.WriteLine(请输入10个同学的数学成绩n); double sum = 0; for (int i = 0; i math.Length; i+) Console.Write(第 + (i + 1) + 个:); mathi = double.Parse(Console.ReadLine(); sum += mathi; 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