Thread: Problem with if

import java.util.Scanner;

public class aritmetik {

public static void main(String[] args) {
Scanner keyboard = new Scanner(System.in);

int tal1, tal2, result;

System.out.print("Enter a number: ");
tal1 = keyboard.nextInt();
System.out.print("Enter another number: ");
tal2 = keyboard.nextInt();

System.out.println("How much is: " +tal1 + "+" +tal2);
result = keyboard.nextInt(tal1 + tal2);


if(tal1 + tal2 == result){
System.out.println("The answer was correct!");
}else{
System.out.println("The answer was wrong!");
}
}
}


In future purposes I will add some kind of a loop (when I´ve learned a bit about it) and asking the user again and again if the answer is wrong. But for now I just want this code to work.

Something is wrong with the If statement, dont really now what but I get this error message:
Exception in thread "main" java.util.InputMismatchException: For input string: "8"
at java.util.Scanner.nextInt(Scanner.java:2097)
at aritmetik.main(aritmetik.java:16)

Originally Posted by Norm

What is the value of expression in the call to nextInt() on line 16?
Why are you using those args with the nextInt() method?

@Norm I really don´t know. Just started programming two days ago. Suggestions?

I made it work Norm ;D


import java.util.Scanner;

public class aritmetik {

public static void main(String[] args) {
Scanner keyboard = new Scanner(System.in);

int tal1, tal2, resultat;

System.out.print("Ange ett heltal: ");
tal1 = keyboard.nextInt();
System.out.print("Ange ett till heltal: ");
tal2 = keyboard.nextInt();

System.out.println("Vad blir: " +tal1 + "+" +tal2 +"?");
resultat = keyboard.nextInt();

if(resultat == tal1 + tal2){
System.out.println("Du svarade rätt");
}else{
System.out.println("Du svarade fel");
}
}
}

Sometimes you just gotta think things through a couple of times. Now I want to tweak my code, I want to make a loop where the program asks the user if he wants to continue with a new number YES/NO if yes then make the process once more. Is it a do loop?