Random Mathe-Quiz-Programm mit Java

Ich versuche zu erstellen, die eine zufällige Mathe-quiz-Programm (zahlen, sollen zwischen 0 und 20).

Jedoch, wenn die richtige Antwort gegeben wird das Programm nur beendet. Wie kann ich dieses Problem beheben?

import java.util.Scanner;

public class Project03 {

    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);
        System.out.print("Enter your name:");
        String name = keyboard.nextLine();
        System.out.print("Welcome " + name + "! Please answer the following questions:");

        int randomNumber1 =  (int)(20 * Math.random()) + 1;
        int randomNumber2 =  (int)(20 * Math.random()) + 1;
        int randomNumberAdd = randomNumber1 + randomNumber2;
        int randomNumberMul = randomNumber1 * randomNumber2;
        int randomNumberDiv = randomNumber1 / randomNumber2;
        int randomNumberRem = randomNumber1 % randomNumber2;
        double correct = 0;
        double percentageCorrect = correct * 25;


        System.out.print(randomNumber1 + " + " + randomNumber2 + " = ");
        int GuessRandomNumberAdd = keyboard.nextInt();
        if (GuessRandomNumberAdd == randomNumber1 + randomNumber2) {
            System.out.println("Correct!");
            correct++;
        }
        else {
            System.out.println("Wrong!");
            System.out.println("The correct answer is " + randomNumberAdd);

            System.out.print(randomNumber1 + " * " + randomNumber2 + " = ");
            int GuessRandomNumberMul = keyboard.nextInt();
            if (GuessRandomNumberMul == randomNumber1 * randomNumber2) {
                System.out.println("Correct!");
                correct++;
            }
            else{
                System.out.println("Wrong!");
                System.out.println("The correct answer is " + randomNumberMul);
            }

            System.out.print(randomNumber1 + " /" + randomNumber2 + " = ");
            int GuessRandomNumberDiv = keyboard.nextInt();
            if (GuessRandomNumberDiv == randomNumber1 / randomNumber2) {
                System.out.println("Correct!");
                correct++;
            }
            else{
                System.out.println("Wrong!");
                System.out.println("The correct answer is " + randomNumberMul);


                System.out.print(randomNumber1 + " % " + randomNumber2 + " = ");
                int GuessRandomNumberRem = keyboard.nextInt();
                if (GuessRandomNumberRem == randomNumber1 % randomNumber2) {
                    System.out.println("Correct!");
                    correct++;
                }
                else{
                    System.out.println("Wrong!");
                    System.out.println("The correct answer is " + randomNumberRem);

                    System.out.println("You got " + correct + " correct answers.");

                    System.out.println("That's " + percentageCorrect + "%!");
                }
            }
        }
    }
}

bitte versuchen Sie es Debuggen....
Möchten Sie die Möglichkeit bieten, die Benutzer spielen eine weitere Runde?
Sie haben einen einzigen if-block, gefolgt von mehreren anderen Blöcken, die im Einklang stehen. Wenn der erste block ist bestanden, indem er eine korrekte Antwort, wird das Programm beendet, weil es nichts folgt, nicht in ein anderes.

InformationsquelleAutor Mehmet | 2015-09-17

java

Befestigen Sie es, indem Sie nicht verschachteln Sie Ihre if Aussagen, wie Sie tun. Dies ist, was Sie tun:

give first quiz
if answer is correct {
    print "Correct"
} else {
    print "Wrong"

    give second quiz
    if answer is correct {
        print "Correct"
    } else {
        print "Wrong"

        //and so on

    }

}

Dies ist, was Sie tun möchten:

give first quiz
if answer is correct {
    print "Correct"
} else {
    print "Wrong"
}

give second quiz
if answer is correct {
    print "Correct"
} else {
    print "Wrong"
}

//and so on

Unabhängigen

Wenn Sie möchten, dass zwei zufällige Ganzzahlen, die zwischen 0 und 20, beide inclusive, man sollte es so machen:

Random rnd = new Random();
int randomNumber1 = rnd.nextInt(21); //0-20
int randomNumber2 = rnd.nextInt(21); //0-20

Natürlich, Sie wahrscheinlich nicht wollen randomNumber2 zu 0 (division durch null Fehler), also vielleicht 1-20 ist besser für randomNumber2:

Random rnd = new Random();
int randomNumber1 = rnd.nextInt(21);     //0-20
int randomNumber2 = rnd.nextInt(20) + 1; //1-20

Von Ihnen positiv bewertet werden für das zeigen von pseudo-code. Dies zwingt den OP, um die eigentliche Codierung.

InformationsquelleAutor Andreas

0

Ich nehme an, Sie wollen das Programm weiter ausgeführt, bis die Benutzer entscheidet, zu existieren.

Naive Ansatz ist, setzen meist alles nach dem "Willkommen" - Zeile in eine while-Schleife, die nur endet, wenn der Benutzer eine Kündigung Wert, wie "exit" oder "e" als Antwort.
```
//Enter user name
//post first question
//enter answer or "exit" to exit program
while (input != EXIT_FLAG) {
//evaluate user input, check if correct, accumulate right/wrong scores, post next question...
}
//print % correct
System.exit(1);
```
InformationsquelleAutor Keith

Vielen, vielen Dank! Ich habe gerade das problem behoben. Ich entschuldige mich, wenn ich ihn etwas fragte, sehr basic!

import java.util.Scanner;

public class Project03 {

    public static void main(String[] args) {
    Scanner keyboard = new Scanner(System.in);
    System.out.print("Enter your name:");
    String name = keyboard.nextLine();
    System.out.print("Welcome " + name + "! Please answer the following questions:");

    int randomNumber1 =  (int)(20 * Math.random()) + 1;
    int randomNumber2 =  (int)(20 * Math.random()) + 1;
    int randomNumberAdd = randomNumber1 + randomNumber2;
    int randomNumberMul = randomNumber1 * randomNumber2;
    int randomNumberDiv = randomNumber1 / randomNumber2;
    int randomNumberRem = randomNumber1 % randomNumber2;
    int correct = 0;


    System.out.print(randomNumber1 + " + " + randomNumber2 + " = ");
    int GuessRandomNumberAdd = keyboard.nextInt();

    if (GuessRandomNumberAdd == randomNumber1 + randomNumber2) {
    System.out.println("Correct!");
    correct++;
  }else {
    System.out.println("Wrong!");
    System.out.println("The correct answer is " + randomNumberAdd);

  }
    System.out.print(randomNumber1 + " * " + randomNumber2 + " = ");    
    int GuessRandomNumberMul = keyboard.nextInt();

  if (GuessRandomNumberMul == randomNumber1 * randomNumber2) {
      System.out.println("Correct!");
      correct++;
  }else{
        System.out.println("Wrong!");
        System.out.println("The correct answer is " + randomNumberMul);


  }
    System.out.print(randomNumber1 + " /" + randomNumber2 + " = ");
    int GuessRandomNumberDiv = keyboard.nextInt();

    if (GuessRandomNumberDiv == randomNumber1 / randomNumber2) {
        System.out.println("Correct!");
        correct++;

        }else{
            System.out.println("Wrong!");
            System.out.println("The correct answer is " + randomNumberMul);


    }
        System.out.print(randomNumber1 + " % " + randomNumber2 + " = ");
        int GuessRandomNumberRem = keyboard.nextInt();
            if (GuessRandomNumberRem == randomNumber1 % randomNumber2) {
            System.out.println("Correct!");
            correct++;

            }else{
                System.out.println("Wrong!");
                System.out.println("The correct answer is " + randomNumberRem);
            }
double percentageCorrect = correct * 25;

System.out.println("You got " + correct + " correct answers.");

System.out.println("That's " + percentageCorrect + "%!");
        }
}

InformationsquelleAutor Mehmet

-2

import java.util.Scanner;

public class Project03 {


    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);
        System.out.print("Enter your name:");
        String name = keyboard.nextLine();
        System.out.print("Welcome " + name + "! Please answer the following questions:");


        double correct = 0;


        for(int i=0; i<10; i++)    {
            int randomNumber1 =  (int)(20 * Math.random()) + 1;
            int randomNumber2 =  (int)(20 * Math.random()) + 1;
            int randomNumberAdd = randomNumber1 + randomNumber2;

            System.out.print(randomNumber1 + " + " + randomNumber2 + " = ");
            int GuessRandomNumberAdd = keyboard.nextInt();
            if (GuessRandomNumberAdd == randomNumber1 + randomNumber2)
            {
                System.out.println("Correct!");
                correct++;
            }
            else
            {
                System.out.println("Wrong!");
                System.out.println("The correct answer is " + randomNumberAdd);

                System.out.print(randomNumber1 + " + " + randomNumber2 + " = ");
                int GuessRandomNumberMul = keyboard.nextInt();
                if (GuessRandomNumberMul == randomNumber1 + randomNumber2) {
                    System.out.println("Correct!");
                    correct++;
                }
                else{
                    System.out.println("Wrong!");
                    System.out.println("The correct answer is " + randomNumberAdd);
                }
            }
        }
        double percentageCorrect = (correct * 100)/10;
        System.out.println("The percentage is " + percentageCorrect);
    }
}

InformationsquelleAutor Aswad

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