Thread: HELP: My program is having an error which says "cannot find symbol", but the symbols are actually there, I think I placed it in the wrong place. Please tell me where I got it wrong.

I have to make a program using a one-dimensional array that accepts as input an integer value asking for the number of elements for each list. This will be used to generate random numbers (10-99) for the one-dimensional arrays (list a and list b). The program will compute for the product and store it in another array (list c).

Example of an output that I should get should be:

Input the number of elements: 3
List A [space] List B [space] List C
34 [---space---] 15 [-space-] 510
64 [---space---] 25 [-space-] 1600
11 [---space---] 50 [-space-] 550


But the program I did is having errors in my last statement saying that: cannot find the symbol i and j
Can you tell me where I got it wrong?

Here's my program:

import java.util.* ;
public class onedimensional_array{
   public static void main(String[] args){
      Random rand = new Random();
      Scanner kbd = new Scanner(System.in);
 
      System.out.print("Input the number of elements: ");
        int elements = kbd.nextInt();
      System.out.println("List A" + "     " + "List B" + "      " + "List C");  
 
        int listA[] = new int[elements];
        int listB[] = new int[elements];
 
            for(int i=0; i<elements; i++){
                listA[i] = 10 + rand.nextInt(90);
            }    
 
            for(int j=0; j<elements; j++){
                listB[j] = 10 + rand.nextInt(90);
            }
                    System.out.println(listA[i] + "         " + listB[j] + "           " + listA[i]*listB[j]);
        }
   }

Should I declare i and j outside of the loop ?

I wanted to print the values from the loops in the last statement with errors.

hi can you give an example on how I can put the values of the two arrays in one loop?

thank you so much, I'm so sorry for the inconvenience

--- Update ---

oh nevermind, I already got it, thank you so much for the help.