JuniorTheoryCommon

What happens when the program is compiled and run?

JAVA

public class Main {
    public static void main(String[] args) {
        int sum = 0;
        for (int i = 1; i <= 3; i++) {
            sum += i;
        }
        System.out.println(sum + " " + i);
    }
}

It does not compile

Expecting 6 4: a variable declared in the for header lives only inside the loop, so i is an unknown name after it and javac reports cannot find symbol.
Expecting a failure at run time: javac checks every name before the program runs, so nothing is printed, not even sum.

How would you change the code to print the value i has after the loop?
Can two loops, one after the other in main, both declare int i?

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Back to questions

JuniorTheoryCommon

What happens when the program is compiled and run?

JAVA

public class Main {
    public static void main(String[] args) {
        int sum = 0;
        for (int i = 1; i <= 3; i++) {
            sum += i;
        }
        System.out.println(sum + " " + i);
    }
}

It does not compile

Expecting 6 4: a variable declared in the for header lives only inside the loop, so i is an unknown name after it and javac reports cannot find symbol.
Expecting a failure at run time: javac checks every name before the program runs, so nothing is printed, not even sum.

How would you change the code to print the value i has after the loop?
Can two loops, one after the other in main, both declare int i?

Back to questions Open topic in roadmap →Answer it yourself — Quiz