Question

Hello,
Could you please explain how I would complete this program with input validation to ensure that an error message will not appear if the user enters something other than an integer that is not 1-100 and later if they enter anything other than yes and no?

Here is the program:

Write a program that plays the Hi-Lo guessing game with numbers. The program should pick a random number between 1 and 100 (inclusive), then repeatedly promt the user to guess the nmber. On each guess, report to the user that he or she is correct or that the guess is high or low. Continue accepting guesses until the user guesses correctly or chooses to quit. Use a sentinel value to determine whether the user wants to quit. Count the number of guesses and report that value when the user guesses correctly. At the end of the game (by quitting or a correct guess), prompt to determine whether the user wants to play again. Continue playing games until the user chooses to stop.

Thank you

Answer 1

Hey,

Note: Brother in case of any queries, just comment in box I would be very happy to assist all your queries

import java.util.Random;
import java.util.Scanner;
public class TEST{

public static void main(String []args){
System.out.println();
Random rand = new Random();
Scanner sc=new Scanner(System.in);
int flag=1;
while(flag!=0)
{
int num=rand.nextInt(100)+1;

int guess=0;
while(guess!=num)
{
System.out.println("Enter a guess or press -1 to quit: ");
guess=sc.nextInt();

if(guess==-1)
{
System.out.println("You have chosen to quit!");
break;
}
while(guess<1||guess>100)
{
System.out.println("Invalid input!!");
guess=sc.nextInt();
}
if(guess>num)
{
System.out.println("Your guess is high!");
}
else if(guess<num)
{
System.out.println("Your guess is low!");
}
else
{
System.out.println("You have guessed it correctly");
}
}
System.out.println("Press 1 to play again or press 0 to quit!");
flag=sc.nextInt();
}
}
}

Kindly revert for any queries

Thanks.