C # the next day,

C # the next day,

I have made a few small exercises today to share with you.

1. Print the isosceles triangle with *. The Code is as follows:

Static void Main (string [] args) {int n = 5; for (int I = 1; I <= n; I ++) // n indicates the total number of rows {for (int j = 1; j <n-I; j ++) {// print the number of spaces. Console. write ("") ;}for (int k = 1; k <= 2 * I-1; k ++) // print * {Console. write ("*");} Console. writeLine ();}}

Because the isosceles triangle is 1, 3, 5, 7..., just look for the rule.

2. Write a program and enter an integer to determine the number of digits (for example, 100 is three digits and-99 is two digits)

Static void Main (string [] args) {string a = Console. readLine (); int count = 0; for (int I = 0; I <. length; I ++) // converts it to an array of characters {Console. writeLine (a [I]); if (a [I]! = '+' & A [I]! = '-') // Judgment symbol {count ++ ;}} Console. WriteLine ("Yes: {0}", count );}

3. compile a common Person class with attributes such as Name, Age, Sex, and so on, then, the Person class is inherited to get a Student class (Student), which can calculate the average score of the five Student scores, and finally verify the Student class function in the main function;

Using System; using System. collections. generic; using System. linq; using System. text; using System. threading. tasks; namespace ConsoleApp6 {class Program {class People {public string Name {get; set;} public int Age {get; set;} public string Sex {get; set ;}} class Student: People {public double Ave (params int [] nums) {// Variable Parameter return nums. average (); // calculate the draw value} static void Main (string [] args) {Student s = new Student (); s. name = "congyunfeng"; s. age = 21; s. sex = "male"; int [] a = {98, 89, 67, 75,100}; Console. writeLine (s. the age of Name + "is:" + s. age + "Gender:" + s. sex + "score:" + s. ave (a); Console. read ();}}}

4. Write a method, input three numbers from the keyboard, and use the ternary operator (? :) Find the maximum number.

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApp6{    class Program    {        static int Max(int a,int b,int c)        {            return (a > b) ? ( a > c ? a : c ):( b > c ? b : c );        }                static void Main(string[] args)        {            string a = Console.ReadLine();            string b = Console.ReadLine();            string c = Console.ReadLine();            int a1 = int.Parse(a);            int b1 = int.Parse(b);            int c1 = int.Parse(c);            Console.WriteLine(Max(a1, b1, c1));            Console.Read();        }    }}

There are certainly different solutions to these questions. My code is also very bad, but it is a beginner and will be optimized in the future. I hope you can add more questions.