﻿ C# exercises and solutions-random number

# C# exercises and solutions-random number

## Random number in C#

### Exercise 1: Write a C# program to allow a user to guess a number( from 1 to 6) that will be randomly generated by computer.

The user is asked to input his/her number. Then the number will be compared with the random number. See the example below:

Enter your number: 2
You lost.
My number is: 4

Solution:

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

namespace ConsoleApplication1
{

class Program
{

static void Main(string[] args)
{

ranguess();

Console.ReadLine();

}

public static void ranguess()
{
int yn, rn;
Random rd = new Random(); //create random object

Console.Write("Enter your guess number:");
yn = int.Parse(Console.ReadLine());
rn =rd.Next(1,7);//generate random number from 1 t 6
Console.WriteLine(rn);
if (yn == rn)
{
Console.WriteLine("You won.");

}
else
{
Console.WriteLine("You lost.");
Console.WriteLine("My number is {0}.", rn);

}

}
}

}

### Exercise 2: Modify the C# program above in order to have chances to continue or stop guessing.

Solution:

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

namespace ConsoleApplication1
{

class Program
{

static void Main(string[] args)
{

ranguess();

Console.ReadLine();

}

public static void ranguess()
{
int yn, rn;
int con=1;
Random rd = new Random(); //create random object
while (con == 1)
{
Console.Write("Enter your guess number:");
yn = int.Parse(Console.ReadLine());
rn =rd.Next(1,7);//generate random number from 1 t 6
Console.WriteLine(rn);
if (yn == rn)
{
Console.WriteLine("You won.");

}
else
{
Console.WriteLine("You lost.");
Console.WriteLine("My number is {0}.", rn);

}

Console.Write("Press 1 to continue:");
con = int.Parse(Console.ReadLine());

}

}
}

}

### Comments

 Shkar using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApplication36 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { Random r = new Random(); int x = 1; x=r.Next(7); MessageBox.Show(x.ToString()); if (x < 3) { MessageBox.Show("you lost"); } else { MessageBox.Show("you winner"); } } } } 2018-01-20 shrillusing System; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; namespace randomNumber { public class Program { public void Main(string[] args) { Random rnd = new Random(); int random = rnd.Next(1, 7); int input; string choice = "y"; while (choice == "y") { Console.WriteLine("Enter a number between 0 and 6"); input = int.Parse(Console.ReadLine()); if (input == random) { Console.WriteLine("You won"); break; } else { Console.WriteLine("You lost"); Console.WriteLine("Do you want to continue?"); choice = Console.ReadLine().ToString(); if (choice == "n") { break; } else continue; } } } } } 2017-01-29 jamiscoHey guys, instead of creating a variable for your while loop. You can set the expression to true in the while loop so instead if doing this int life = 1 while (life == 1) { stuff.. } you can do this while (true) { stuff... } here is a link explaining this concept https://social.msdn.microsoft.com/Forums/en-US/fe98c04f-2e63-49e8-a26a-ad2cb88865df/while-true-need-help?forum=csharplanguage2016-12-30 saidusing System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace RandomNumber { class Program { static void Main(string[] args) { int status=1; int randomNumber; int UserNUmber; while (status == 1) { Random newNo = new Random(); Console.WriteLine("Enter the guessing number :"); UserNUmber = Convert.ToInt16(Console.ReadLine()); randomNumber = newNo.Next(1, 7); if (randomNumber == UserNUmber) { Console.WriteLine("You guessed rigth!"); break; } else { Console.WriteLine("You Guessed Wrong!!!"); Console.WriteLine("The number is {0}", randomNumber); Console.WriteLine("\n....play again.....\n"); } } Console.ReadLine(); } } }2016-01-22 Monir Hossainint PcNumber, UserNumber; string press = "y"; Random RandomNumber = new Random(); /*Auto generated random number procedures*/ start1: //Label PcNumber = RandomNumber.Next(0, 9); //Storing PC number Console.WriteLine("The Computer is thinking of a number between 0 and 9. Can you guess the number?\n"); start2: UserNumber = Convert.ToInt32(Console.ReadLine()); //Stroing User Number if (UserNumber >= 10) { Console.WriteLine("\nInvalid Number, Please Chosse (0-9)\n"); goto start2; } else if (UserNumber == PcNumber) { Console.WriteLine("\nYou won.\n"); Console.WriteLine("\nWanna start a new game ?\n"); Console.WriteLine("If yes then type 'y'.\n"); C: press = Console.ReadLine(); if (press.ToLower() == "y") { Console.WriteLine("\n------------New Game----------------\n"); goto start1; } else { Console.WriteLine("\nInvalid character ! press 'y' to start a new game\n"); goto C; } } else if (UserNumber < PcNumber) { Console.WriteLine("\nApperantly You have to raise the number, wanna try again?\n"); Console.WriteLine("If yes then type 'y'.\n"); A: press = Console.ReadLine(); if (press.ToLower() == "y") { Console.WriteLine("\nEnter your new guess\n"); goto start2; } else { Console.WriteLine("\nInvalid character ! press 'y' to proceed\n"); goto A; } } else if (UserNumber > PcNumber) { Console.WriteLine("\nYou were close. Gotta decrease the number a bit, wanna try again?\n"); Console.WriteLine("If yes then type 'y'.\n"); B: press = Console.ReadLine(); if (press.ToLower() == "y") { Console.WriteLine("\nEnter your new guess\n"); goto start2; } else { Console.WriteLine("\nInvalid character ! press 'y' to proceed\n"); goto B; } } Console.ReadKey(); 2015-11-29 AaronI have a problem with using an int to continue. Basically the way it's done if someone enters a character it will break. But for the purpose of teaching Random then this is great :)2015-06-28

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