Thread: Need help with Pick A Card Program Please

Here is the program I have so far for the Pick A Card assignment. It almost works but gives the wrong answer? Is something backwards in my code?

 
import java.util.*;
 
public class assign_7
{
    static Scanner js = new Scanner(System.in);
 
    public static void main (String[] args)
    {
        int num1, num2;
        int guess;
		char choice;
		String aString;
 
        num1 = (int) (Math.random() * 100);
        num2 = (int) (Math.random() * 100);
 
 
        System.out.println("Enter 1 to see card 1 OR enter 2 to see card 2:");
		guess = js.nextInt();
 
 
// Player picks card 1
		if (guess == 1) {
			guess = num1;
			System.out.println("You picked card 1, which has the value of " + num1);
			System.out.println("Is this the highest card? (y/n)");
 
			aString = js.next();
			choice = aString.charAt(0);
 
			System.out.println();
 
		if ((aString.equals ("y")) && (num1 < num2))
			System.out.println("Correct. The other card is " + num2);
 
		if ((aString.equals ("y")) && (num1 > num2))
			System.out.println("Incorrect. The other card is " + num2);
 
		if ((aString.equals ("n")) && (num1 < num2))
			System.out.println("Correct. The other card is " + num2);
 
		else if ((aString.equals ("n")) && (num1 > num2))
			System.out.println("Incorrect. The other card is " + num2);
 
	}
 
// Player picks card 2
		if (guess == 2) {
			guess = num2;
			System.out.println("You picked card 2, which has the value of " + num2);
			System.out.println("Is this the highest card? (y/n)");
 
			aString = js.next();
			choice = aString.charAt(0);
 
			System.out.println();
 
		if ((aString.equals ("y")) && (num1 < num2))
			System.out.println("Incorrect. The other card is " + num1);
 
		if ((aString.equals ("y")) && (num1 > num2))
			System.out.println("Correct. The other card is " + num1);
 
		if ((aString.equals ("n")) && (num1 < num2))
			System.out.println("Incorrect. The other card is " + num1);
 
		else if ((aString.equals ("n")) && (num1 > num2))
			System.out.println("Correct. The other card is " + num1);
		}
 
 
    }
}

Hello gcjava!

Originally Posted by gcjava

It almost works but gives the wrong answer? Is something backwards in my code?

You have some logic errors. You need to check again some of your if statements. I think it would help if you printed both cards (for debbuging), tested your code with every possible input and then go back to your code (the if statements) to see what is the bug.