Thread: Is my code working

Hello all, I am on a computer that I cannot download anything on and it does not have jdk on it so I cannot test my code to see if it is running. Anyone mind running it for me to see if all is right? I believe it is, but I could be wrong. What my code does is add two integers of up to 50 digits each together.

import java.util.* ; 
 
  public class Calculator {
    public static void main(String[] args) {   
    Scanner s = new Scanner(System.in);
    System.out.print("Enter the first integer:");
    String a = s.nextLine(); 
    System.out.print("Enter the second integer:");
    String b = s.nextLine();    
    int[] num1 = new int[a.length()];
    int[] num2 = new int[b.length()];
    for (int i=0;i<a.length();i++) {
      num1[i] = (int) a.charAt(i);
      num2[i] = (int) b.charAt(i);
    }
    int[] sum = new int[a.length()];
    for (int n=b.length()-1;n>=0;n--)
    {
      if (num1[n]+num2[n]<10)
      {
        sum[n]=num1[n]+num2[n];
 
      }  
      if (num1[n]+num2[n]>=10) 
      {
        sum[n]=(num1[n]+num2[n])%10;
        sum[n-1]=sum[n-1]+1;  
      }
    }
    for (int d=0; d<a.length();d++) {
      System.out.print(sum[d]+" ");
    }  
  }
}

Thanks for any help!

Thanks for doing that I really appreciate it. I'm not sure what is wrong with that line of code I wrote though. Anybody know what I'm doing wrong here?

sum[n-1]=sum[n-1]+1;

--- Update ---

I looked up the error online but still am not grasping the meaning of it.

So would that code example you showed me compile like my program did then show an error? How come it lets my program compile and lets the user enter the integers before showing the error?