Question

Create a program that has the computer generate a random number between 1 and 100. The user is then asked to guess the number. If the user is wrong, they are informed whether the answer is too high or too low. The user is then allowed to guess again. This continues until the user guesses the number correctly. You must also include an introduction screen with instructions.

Answer 1

Hey

Answer 2

Hey

Answer 3

So I have some code, and i will post it here

Answer 4

kk

Answer 5

import java.util.*;

class NumberGame {
public static void main(String[] args) {
int userValue;
int randomNumber = 1;
int (100 * Math.random();
}
System.out.println("Welcome to the Random Number Guessing Game! A number between 1 and 100 will be generated at random. You are to enter a value within this range to guess the value. If you are wrong, you will be informed whether you are too high or too low. Keep guessing until you guess correctly.");
for (randomNumber = 1; userValue <=100 && userValue >= 1; userValue ++)))
System.out.println("Please enter a number between 1 and 100.");
if (userValue == randomNumber)
System.out.println("You have guessed correctly! Congratulations!!!");
else if (userValue > randomNumber
System.out.println("Your guess is too high. Please try again.");
else if (userValue < randomNumber
System.out.println("Your guess is too low. Please try again.");
else
System.out.printIn("Sorry, please enter a valid number between 1 and 100.");

Answer 6

So, I am wondering whether I initialized everything properly.

Answer 7

Hmm, cool. I've never see the Math class's random method. I'm used to using the Random class.

Answer 8

I'm using loops for this

Answer 9

I can teach you how to make any random number- random between 0 and 1 (decimal) or random between +-2 billion or +- 9 quintillion, or a random number in a set range if you care for it.

Answer 10

ya, a loop which ends when you enter the right value sounds good.

Answer 11

First- that block of text from your first System.out.println(""); is long horizontally, add \n through out the text, each \n will enter it to be in a new line.

Answer 12

so it becomes a paragraph

Answer 13

also- do you intend for you if else if statements to be a part of the for loop? it would need curly bracuts so that it all loops
for (code) {
statemtne;
statement;
}

Answer 14

In the meantime I'll learn the Math's random method.

Answer 15

ok thanks !:D

Answer 16

ok. I've got it.

Answer 17

first off, in you're Math.random initialization, you don't have it's value being returned to any variable... you need something like
<data type> <variable> = some version of Math.random()

Answer 18

Keep in mind that Math.random, like most of the methods under the Math class (.pow .sqrt) return doubles, so you'll need to either set the value it returns to a double, or cast it as an int, and then return it as an int.. though it would always return zero, because Math.random(); returns a random 15 digit decimal between 0 and 1; so you can counteract that by multiplying Math.random() to 100.

Answer 19

or multiplying it to however many of the 15 decimal places you want left of the decimal point.

Answer 20

I'm assuming you understand these terms though- so if it sounds like jibberish let me know :p

Answer 21

I can tell you about the different data types, and why for some of them you need to do a cast operator, like (int), and why sometimes it changes the data value automatically.

Answer 22

Be back in 10;

Answer 23

ok

Answer 24

Want me to teach ya?

Answer 25

@sciencewiz3000

Answer 26

Hey, that would be great if you could :)

Answer 27

allright, so Math.random(); returns a random decimal number between 0 and 1- how would you use the Math.random() to get a random number between 1 and 100?

Answer 28

So I want to get an integer value only so that's why I've defined the value as int

Answer 29

good- you're missing a closing parenthasis when you call it

Answer 30

oh ok thanks :)

Answer 31

also, when you want to make it into an int - or anything for that matter, you need parenthesis around around it:: Like so
(int)Math.random();
instead of
int Math.random();

Answer 32

great! That's what I was missing :P

Answer 33

another thing too.. now that you're
(int)(Math.round() * 100); is written, how do you plan on saving that random value?

Answer 34

good point, do you think I should be using an assignment statement?

Answer 35

assignment statement? probably - how do you think it should look?

Answer 36

like maybe randomNumber = new randomNumber;

Answer 37

or should I initialize it to zero?

Answer 38

randomNumber looks good- now you have to make it equal to the random number- like
randomNumber = (int)(Math.round() *100);

Answer 39

this will assign a random number of 0-99 to randomNumber

Answer 40

Ok and should I put this at the beginning of the program under the variable declarations?

Answer 41

ya, near the top is good- you can replace that statement with the hanging
int (100 * Math.random(); line that you have

Answer 42

in the code you posted

Answer 43

ok let me try that

Answer 44

the Math.random() method will make a decimal between 0 and .99999, after you multiply by 100, it will always have an integer range of 0-99; I see in your post you want 1-100

Answer 45

gtg in 5

Answer 46

ok thanks for all of your help, looks like it is working with that. Thanks :)

Answer 47

do you know how to get user input?

Answer 48

yw sciencewiz. are you really gonna be allright?

Answer 49

you have a closing bracket near the top that shouldn't be there, extra closing parenthesis on the for loop, no means to get user input, missing brackets to outline the body of the for loop, and the for loop exits when you enter a number outside the 1-100 range, instead of getting the right answer.

Answer 50

gl sw.

Answer 51

Just a little FYI: To make code more readable, use a code paste site like dpaste or pastbin, OR use the code highligh system here. The code highlight here is triggered with ``` above and below the code block. That is the accent that also has ~ on it.

Without:
import java.util.*;
class NumberGame {
public static void main(String[] args) {
int userValue;
int randomNumber = 1;
int (100 * Math.random();

With:
```
import java.util.*;
class NumberGame {
public static void main(String[] args) {
int userValue;
int randomNumber = 1;
int (100 * Math.random();
```

Answer 52

Well

Answer 53

@blahblah212121 The goal of the site is not to do work for people but to help them do their work. So if they have trouble, you point out where the issue is.