Why can I not print this variable inside a for loop?

Question

import java.util.*;
class test2 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] incomes = new int[N];
        for (int i = 0; i < N; i++) {
            incomes[i] = sc.nextInt();
        }
        System.out.println(Arrays.toString(incomes));
        int[] taxes = new int[N];
        for (int i = 0; i < N; i++) {
            taxes[i] = sc.nextInt();
        }
        System.out.println(Arrays.toString(taxes));
        int[] payed = new int[N];
        for (int i = 0; i < N; i++) {
            payed[i] = incomes[i] * taxes[i];
        }
        System.out.println(Arrays.toString(payed));
        int max = payed[0];
        for (int i = 1; i < N; i++) {
            if (payed[i] > max) {
                max = payed[i];
                int count = i;
            }
        }
        System.out.println("Max is " + count);
    }
}

I can print max fine but I cannot print count. I dont see the difference between max and count and why it will not let me print out count. Any help is appreciated

You are redefining the count variable inside your for loop and not using it: int count = i; — IntoVoid, Apr 11 '21 at 14:06
You define `count` only within the for loop. It is not visible outside of the block that contains the definition. — Thomas Kläger, Apr 11 '21 at 14:06

saeedkazemi · Answer 1 · 2021-04-11T14:13:25.120

1

The count variable is defined inside the loop. You need to define it before the loop so that you have access to it after the loop.

int count = 0;
for (int i = 1; i < N; i++) {
    if (payed[i] > max) {
        max = payed[i];
        count = i;
    }
}
System.out.println("Max is " + count);

moreover you probably need count++ instead of count = i;

edited Apr 11 '21 at 14:13

answered Apr 11 '21 at 14:07

saeedkazemi

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Why can I not print this variable inside a for loop?

1 Answers1