#im trying to make a simple calculator

1 messages · Page 1 of 1 (latest)

fast blaze
#

I am having trouble with a calculator (am i bad at java?)
plz help

proper meteorBOT
#

<@&987246399047479336> please have a look, thanks.

proper meteorBOT
#

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#

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#

Don't worry, everyone faces challenges when learning a new programming language. I'm here to help you with your calculator program in Java. Can you please provide more details about the specific problem you are facing?

fast blaze
# 
package main;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        //create stuff
        Scanner scanner = new Scanner(System.in);
        
        //variable crap
        System.out.print("Enter a number: ");
        long numberInputOne = scanner.nextLong();
        
        System.out.print("Enter another number: ");    
        long numberInputTwo = scanner.nextLong();
        
        System.out.print("Enter your math symbol: ");
        String symbol = scanner.next();
        
        char first = symbol.charAt(0);
        
        System.out.println(numberInputOne + first + numberInputTwo);
        
        
        //actual stuff
    }
}
proper meteorBOT
# fast blaze ```java package main; import java.util.Scanner; public class Main { public...

Detected code, here are some useful tools:

Formatted code 
package main;

import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    //create stuff
    Scanner scanner = new Scanner(System.in);
    //variable crap
    System.out.print("Enter a number: ");
    long numberInputOne = scanner.nextLong();
    System.out.print("Enter another number: ");
    long numberInputTwo = scanner.nextLong();
    System.out.print("Enter your math symbol: ");
    String symbol = scanner.next();
    char first = symbol.charAt(0);
    System.out.println(numberInputOne + first + numberInputTwo);
    //actual stuff
  }
}
fast blaze
#

The result is 45 when i input 1 + 1, why?

#

pls help

burnt yarrow
#

I test your codes with input '1 + 1', then get a InputMismatchException.
That's the behavior I expect no doubt.

dusky mural
# fast blaze pls help

⬆️
Seeing your code, what you are saying doesn't make sense, the code is asking to first enter an Integer then a second Integer then an operator

lime heart
#

The output 45 does make sense though for what your code is now.
You do numberInput1 + first + numberInput2.
That results in 1 + '+' + 1.
You are doing an expression, so Java tries to convert the character to an integer value.
The character index for the plus sign is 43
So that makes 1 + 43 + 1, which is 45

cold forge
fast blaze