Adding integer variables in Java

[DrMacintosh]

Hello, so I'm working on some homework and I've been able to complete every task so far, however I am asked to find the sum of two user inputted variables. 

 

This is my code so far:

import java.util.Scanner; 

public class OutputWithVars {
   public static void main(String[] args) {
      Scanner scnr = new Scanner(System.in);
      int userNum;
      int userNum2;

      System.out.println("Enter integer:");
      userNum = scnr.nextInt();
      System.out.println("You entered: "+userNum);
      System.out.println(userNum+" squared is "+userNum*userNum);
      System.out.println("And "+userNum+" cubed is "+userNum*userNum*userNum+"!!");
      System.out.println("Enter another integer:");
      userNum2 = scnr.nextInt();
      System.out.println(userNum+" + "+userNum2+" is "\\help me here);
      System.out.println(userNum+" * "+userNum2+" is "+userNum*userNum2);
   }
}

The program outputs correctly:

Quote

Enter integer:

You entered: 4

4 squared is 16

And 4 cubed is 64!!

Enter another integer:

4 + 5 is (this is where the userNum and userNum2 need to add together)

4 * 5 is 20

but I have no idea how to add userNum and userNum2 together. 

 

Thanks for the help!

[79wjd]

7 minutes ago, DrMacintosh said:

Hello, so I'm working on some homework and I've been able to complete every task so far, however I am asked to find the sum of two user inputted variables. 

 

This is my code so far:

import java.util.Scanner; 

public class OutputWithVars {
   public static void main(String[] args) {
      Scanner scnr = new Scanner(System.in);
      int userNum;
      int userNum2;

      System.out.println("Enter integer:");
      userNum = scnr.nextInt();
      System.out.println("You entered: "+userNum);
      System.out.println(userNum+" squared is "+userNum*userNum);
      System.out.println("And "+userNum+" cubed is "+userNum*userNum*userNum+"!!");
      System.out.println("Enter another integer:");
      userNum2 = scnr.nextInt();
      System.out.println(userNum+" + "+userNum2+" is "\\help me here);
      System.out.println(userNum+" * "+userNum2+" is "+userNum*userNum2);
   }
}

The program outputs correctly:

but I have no idea how to add userNum and userNum2 together. 

 

Thanks for the help!

Use the standard addition operator and wrap the addition in parenthesis.

[BobVonBob]

Add parentheses around the addition.

[Mephi00]

Create another int variable where you add userNum and userNum2

[DrMacintosh]

Just now, 79wjd said:

Use the standard addition operator and wrap the addition in parenthesis.

I'm literally new at this. Could you show me how the addition operator is set up? 

[79wjd]

2 minutes ago, DrMacintosh said:

I'm literally new at this. Could you show me how the addition operator is set up? 

System.out.println("The sum of 1 and 2 is " + (1+2));

 

Java's string builder will treat integers before a string like integers (and do any math on them if necessary). Any integers after the string will be treated as strings (unless you wrap them in parenthesis so that the addition is processed first). 

 

E.g. 

 

System.out.println("1+2"+7+7) --> "1+277"

System.out.println(7+7+"1+2") --> "1412"

System.out.println("1+2"+(7+7)) -> "1+214"

[DrMacintosh]

3 minutes ago, 79wjd said:

System.out.println("The sum of 1 and 2 is " + (1+2));

Genius, it works flawlessly. 

import java.util.Scanner; 

public class OutputWithVars {
   public static void main(String[] args) {
      Scanner scnr = new Scanner(System.in);
      int userNum;
      int userNum2;

      System.out.println("Enter integer:");
      userNum = scnr.nextInt();
      System.out.println("You entered: "+userNum);
      System.out.println(userNum+" squared is "+userNum*userNum);
      System.out.println("And "+userNum+" cubed is "+userNum*userNum*userNum+"!!");
      System.out.println("Enter another integer:");
      userNum2 = scnr.nextInt();
      System.out.println(userNum+" + "+userNum2+" is " +(userNum+userNum2));
      System.out.println(userNum+" * "+userNum2+" is "+userNum*userNum2);
   }
}

 

[DrMacintosh]

45 minutes ago, Spirit`yL said:

Neat bro

Thanks