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  1. /*
  2.   Created by Zachary Wander on 9/7/2016.
  3.  */
  4.  
  5.  
  6. import java.util.InputMismatchException;
  7. import java.util.Scanner;
  8.  
  9. import java.util.Random;
  10.  
  11. import static java.lang.Thread.sleep;
  12.  
  13. class numbergame {
  14.  
  15.     //main function
  16.     public static void main(String[] args) {
  17.         while (true) { //keep game going
  18.             try {
  19.                 Scanner in = new Scanner(System.in); //setup user input
  20.  
  21.                 //intro
  22.                 System.out.println("Welcome to the Number Games.");
  23.                 System.out.println("Do you want to:");
  24.                 System.out.println("A) Guess a randomly generated number (1-100)?");
  25.                 System.out.println("B) Have the computer guess a number you come up with, within a range you specify?");
  26.                 System.out.println("C) Quit?");
  27.                 System.out.println("Choice:");
  28.  
  29.                 String choice = in.nextLine(); //take user input
  30.  
  31.                 //handle choice and function passing
  32.                 if (choice.toUpperCase().equals("A")){
  33.                     humanGuess();
  34.                 }
  35.                 else if (choice.toUpperCase().equals("B")){
  36.                     systemGuess();
  37.                 }
  38.                 else if (choice.toUpperCase().equals("C")){
  39.                     System.out.println("BYE!");
  40.                     break;
  41.                 }
  42.                 else {
  43.                     System.out.println("Something happened!"); //so I know if there's an error
  44.                 }
  45.             }
  46.             finally {} //this needs to be here for something
  47.         }
  48.     }
  49.  
  50.     //the number guessing function
  51.     public static void humanGuess() {
  52.         Scanner in = new Scanner(System.in); //setup user input
  53.         int number = (int) (Math.random() * 100) + 1; //generate a random number from 1-100
  54.         int guess; //define guess variable
  55.         int counter = 0; //to count the guesses
  56.  
  57.         //intro
  58.         System.out.println("Guess a number between 1 and 100 (inclusive)");
  59.         System.out.println("You have 7 guesses.");
  60.  
  61.         System.out.println(number); //DEBUG PURPOSES REMOVE
  62.  
  63.         while (true) {
  64.             try {
  65.  
  66.                 if (counter != 0) { //only tell the guess count after the user has guessed
  67.                     System.out.println("You have guessed: " + counter + " time(s).");
  68.                 }
  69.  
  70.                 //if number of guesses is reached, quit
  71.                 if (counter >= 7) {
  72.                     System.out.println("Sorry, you've used all your guesses.");
  73.                     System.out.println("The number was: " + number);
  74.                     System.out.println("Press Enter to continue."); //pretty self explanatory
  75.                     in.nextLine();
  76.                     break;
  77.                 }
  78.  
  79.                 System.out.println("Your guess:"); //get guess
  80.                 guess = in.nextInt();
  81.                 in.nextLine(); //this fixes something when exiting
  82.  
  83.                 if ((guess < 1) || (guess > 100)) { //if the guess is out of bounds, tell the user
  84.                     System.out.println("\n");
  85.                     System.out.println("Read the instructions.");
  86.                     System.out.println("Press Enter to continue."); //pretty self explanatory
  87.                 }
  88.  
  89.                 if (guess > number) {
  90.                     System.out.println("It's lower."); //if the guess is too high, tell user
  91.                 } else if (guess < number) {
  92.                     System.out.println("It's Higher"); //if the guess is too low, tell user
  93.                 } else if (guess == number) {
  94.                     counter = counter + 1; //since it counts up at the end of the loop
  95.                     System.out.println("Correct!");
  96.                     System.out.println("Guesses:" + counter);
  97.                     System.out.println("Press Enter to continue."); //pretty self explanatory
  98.                     in.nextLine(); //I think this needs to be here
  99.                     break;
  100.                 }
  101.                 else {}
  102.                 counter = counter + 1; //raise the guess counter
  103.  
  104.             } catch (InputMismatchException e) {//if user doesn't enter an integer, complain
  105.                 System.out.println("Unusable input. Please use integers.");
  106.                 System.out.println("Press Enter to continue."); //pretty self explanatory
  107.                 in.nextLine(); //dump the bad input
  108.                 break;
  109.             }
  110.         }
  111.     }
  112.  
  113.     public static void systemGuess() {
  114.         Scanner in = new Scanner(System.in); //setup user input
  115.  
  116.         System.out.println("Think of a number and specify a range (integers only).");
  117.  
  118.         //define range variables
  119.         int numlow = 0;
  120.         int numhigh = 0;
  121.  
  122.         //prompt for range
  123.         System.out.println("Enter the lowest number in the range.");
  124.         if (in.hasNextInt()) {
  125.             numlow = in.nextInt();
  126.         } else { //catch non-ints
  127.             System.out.println("Unusable input. Please use integers.");
  128.             System.out.println("Press Enter to continue."); //pretty self explanatory
  129.             in.nextLine(); //I think this needs to be here
  130.             in.nextLine(); //dump the bad input
  131.         }
  132.  
  133.         System.out.println("Enter the highest number in the range.");
  134.         if (in.hasNextInt()) {
  135.             numhigh = in.nextInt();
  136.         } else { //catch non-ints
  137.             System.out.println("Unusable input. Please use integers.");
  138.             System.out.println("Press Enter to continue."); //pretty self explanatory
  139.             in.nextLine(); //I think this needs to be here
  140.             in.nextLine(); //I think this needs to be here
  141.             in.nextLine(); //dump the bad input
  142.         }
  143.  
  144.         if (numhigh < numlow) { //catch if range is reversed
  145.             System.out.println("Smaller number first.");
  146.             System.out.println("Press Enter to continue."); //pretty self explanatory
  147.             in.nextLine(); //I think this needs to be here
  148.             in.nextLine(); //dump the bad input
  149.         }
  150.  
  151.         System.out.println("Range: " + numlow + " - " + numhigh + "\n\n"); //tell the user the range they specified
  152.  
  153.         //instructions
  154.         System.out.println("Time to guess your number. You will see a guess printed.");
  155.         System.out.println("If it is too high, type \"lower.\"");
  156.         System.out.println("If it is too low, type \"higher.\"");
  157.         System.out.println("If it is correct, type \"correct.\" \n");
  158.  
  159.         //make sure the user has read instructions
  160.         System.out.println("Hit Enter to continue.");
  161.         in.nextLine();
  162.         in.nextLine(); //Is there a better way to do this?
  163.  
  164.         guessLoop(numhigh, numlow); //call the guessing function
  165.  
  166.         //gameover confirmation
  167.         System.out.println("Hit Enter to go back to the menu.");
  168.         in.nextLine();
  169.     }
  170.  
  171.     public static int randomInt(int numhigh, int numlow) {
  172.         //create a random guess
  173.         Random randomNum = new Random();
  174.         int randNum = randomNum.nextInt((numhigh - numlow) + 1) + numlow; //generate number from given range
  175.  
  176.         return randNum; //return the random guess
  177.     }
  178.  
  179.     public static void guessLoop(int numhigh, int numlow) {
  180.         Scanner in = new Scanner(System.in); //setup user input
  181.         int counter = 0;
  182.         while(true) {
  183.             try {
  184.                 int guess = randomInt(numhigh, numlow); //call the random number function
  185.  
  186.                 System.out.println("Guess: " + guess); //tell user the guess
  187.  
  188.                 System.out.println("Is the number: ");
  189.                 String response = in.nextLine();
  190.  
  191.                 if (response.toUpperCase().equals("LOWER")) {
  192.                     numhigh = guess - 1;
  193.                 } else if (response.toUpperCase().equals("HIGHER")) {
  194.                     numlow = guess + 1;
  195.                 } else if (response.toUpperCase().equals("CORRECT")) {
  196.                     System.out.println("Great!");
  197.                     System.out.println("It took " + (counter + 1) + " guesses to find the number.");
  198.                     break;
  199.                 }
  200.  
  201.                 counter += 1;
  202.  
  203.             } finally{}
  204.         }
  205.     }
  206. }
Runtime error #stdin #stdout #stderr 0.06s 711680KB
comments (?)
stdin
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Standard input is empty
stdout
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Welcome to the Number Games.
Do you want to:
A) Guess a randomly generated number (1-100)?
B) Have the computer guess a number you come up with, within a range you specify?
C) Quit?
Choice:
stderr
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Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.util.Scanner.nextLine(Scanner.java:1540)
	at numbergame.main(Main.java:29)
https://ideone.com/K5BBws
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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