How can i allow user to input any variable??

Question

I made this java calculator..but as it doesn't have any Gui!.
People might add either strings or doubles!...so how can i allow the code to add length of any variable he/she inputs
https://code.sololearn.com/cQl68ed92a91/?ref=app

Answer 1

Lochlan Sc
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Answer 2

1)there is a typo at line 14. You have put , after answer
use this - int firstnum, secondnum, answer;
2)don't use nextLine() for String input. Use next()
3)change the statement "Answer = (firststring + secondstring);" to "Answer = String.valueOf(Integer.parseInt(firststring) + Integer.parseInt(secondstring));"
4)In your code user can input either int or string, not double

Find the code below

import java.util.Scanner;
import java.util.*;

public class Program
{
public static void main(String[] args)
{
Scanner enternum = new Scanner(System.in);
double firstnum, secondnum, answer;
String firststring, secondstring,Answer;
System.out.println("enter your first number here");
firstnum = (enternum.nextDouble());
System.out.println("enter your second number here");
secondnum = (enternum.nextDouble());
answer = (firstnum + secondnum );
System.out.println("this is the right integer answer to your calculation " + answer);
firststring = (enternum.next());
secondstring = (enternum.next());
Answer = String.valueOf(Integer.parseInt(firststring) +
Integer.parseInt(secondstring));
System.out.println("this is the right string answer to your calculation " + Answer);
}
}

Answer 3

😕😕just asked for help?.. why the language