Thread: Addition Quiz

I need assistance for this question

• When user choose option 1: he will enter the number to practice
• When user choose option 2: the random number from 1 to 10 will be chosen to practice
• When user choose option 3: the program ends

/*Output
Menu:
1. Choose a number to practice
2. Practice with random number
3. Quit
Your Choice: 2

You will be working on: 8
1 + 8 = 9
Correct!
2 + 8 = 10
Correct!
3 + 8 = 12
Wrong!
4 + 8 = 12
Correct!
5 + 8 = 13
Correct!
6 + 8 = 14
Correct!
7 + 8 = 15
Correct!
8 + 8 = 15
Wrong!
9 + 8 = 17
Correct!
10 + 8 = 18
Correct!
Your Score: 8/10

Menu:
1. Choose a number to practice
2. Practice with random number
3. Quit
Your Choice: 1

Enter a number of your choice: 7
1 + 7 = 7
Wrong!
2 + 7 = 10
Wrong!
3 + 7 = 10
Correct!
4 + 7 = 11
Correct!
5 + 7 = 12
Correct!
6 + 7 = 13
Correct!
7 + 7 = 14
Correct!
8 + 7 = 15
Correct!
9 + 7 = 16
Correct!
10 + 7 = 20
Wrong!
Your Score: 7/10

Menu:
1. Choose a number to practice
2. Practice with random number
3. Quit
Your Choice: 3
*/

After the menu, I used if-else-if statement to execute different method.
I created a variable int choice, so when choice is 1, it prompted user to enter a number.
When the choice is 2, I used Math.random(10)+1 to select a random number from 1 to 10.
The program will exit when choice is 3.

The few issues I faced were to print whether if the result is correct or wrong, and to display the right result.

import java.util.*;
 
public class Addition { // begin class 
public static void main (String[]args) { // begin main
Scanner sc = new Scanner (System.in);
int choice = 0;
 
while (choice<3) { // begin while
System.out.println("Menu:");
System.out.println("1. Enter a number to practice");
System.out.println("2. Practice with a random number");
System.out.println("3. Quit");
System.out.print("Your choice: ");
choice = sc.nextInt();
int addNum = 0;
 
if (choice == 1) { // begin if
//Prompt user for the number to practice on
System.out.print("\nEnter a number to practice: ");
addNum = sc.nextInt();
} // end if
else if (choice == 2) { // begin else if
Random number = new Random();
addNum = number.nextInt(10)+1;
System.out.print("\nYou will be quizzed on: " +addNum +"\n");
} // end else if
int score = 0; 
 
for (int num=1; num<=10; num++){ // begin for
System.out.print(num +" X " +addNum +" = ");
int userInput = sc.nextInt();
int addAns = num*addNum;
 
if (addAns == userInput) { // begin if
System.out.print("Correct!\n");
score++;
} // end if
 
else { // begin else
System.out.print("Wrong!\n");
} // end else
} // end for
System.out.print("Your score: " +score +"/10\n\n");
} // end while
} // end main
}  // end program

-1 is less than 3. That's one part of it.