GuessNumber.java

Write a guess a number game where the program creates a secret number (integer of course) and the user has to guess it

This is how you make a random number between 1 and 100: int secret = (int) (Math.random() * 100) +1;

When the user enteres a guess, say if it is too high, too low or just right.
Print out the number of guesses once the user wins.

This will be marked more carefully for formatting, variable names, etc.

In this program, you're going to have to keep asking for the next guess until they get it right. This means that we need to use a loop in our program

Loops

There are two types of loops: for loops and while loops. Some languages have a couple of variations on the while loop (e.g. until, do while).

for loops are used when you want to repeat something a certain number of times
while loops are when you need to repeat something an unknown number of times.
e.g. until you reach the end of a file, your player gets killed, or until something happens.
You can write a while loop as a for loop and vice versa, but it's not really good practice.
Both while loops and for loops can easily be made into infinite loops

While Loops

while (condition) {
   ...
   ...
}

As long as whatever is in the red box is TRUE, then the loop will keep looping and do everyhing that is in the { } over and over again.

Examples

1	2	3
while (true) { get the next guess check to see if it's correct print "too high", etc ... }	while (guess != secret) { get the next guess check to see if it's correct print "too high", etc ... }	do { get the next guess check to see if it's correct print "too high", etc ... } while (secret != guess);
Since this loop loops forever, then how do we ever end the game if the user guesses the correct number?	How can we check what guess is at the top of the loop when the user only starts guessing inside the loop?	This is a do-while loop It is like the previous example, except that it is always guaranteed to execute at least once (the condition to be checked is at the bottom).
Solution: We use the `break;` command. So your "if" statement would say something like this: "if the guess == secret then break;"	Solution:Before we start the loop, we need to set "guess" to some number that the secret number will never be. `int guess = -1; while(guess != secret) { ...`

Note that in the do-while format, you MUST end the last line with a ; (semicolon).
Remember: all lines must end in { } or ;

READ THIS! you should never use System.exit(0) unless you have a very specific and good reason to do so. It is not good programming technique and should be avoided.
"break" or "return" are the correct ways to exit a loop