Week 1: Types, condition clauses and loops/12b. Sum, max of numbers

// Sum of the number and maximum
Write a program that asks the user to enter integers. When the user enters the number -1, the program terminates and prints the sum of all numbers entered (before -1) and the largest number entered.

Example output:

Give a number: 1
Give a number: 2
Give a number: 3
Give a number: -1
Sum: 6
Maximum: 3



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import java.util.Random;
import java.util.Scanner;



public class Test{
    public static void main(String[] args){
        final Random r = new Random();


        
        Scanner reader = new Scanner(System.in);
        int sum = 0;
        int max = 0;

        
        while (true) {
            System.out.print("Give a number: ");
            int num = Integer.valueOf(reader.nextLine());

            // break the loop if '-1'
            if (num == -1) {
                break;
            }

            // cumulative sum
            sum += num;
            // update 'max'
            if (max < num) {
                max = num;
            }           

        }
        System.out.println("Sum: "+sum);
        System.out.println("Maximum: "+max);
            

        
    }
}








Test number 1
Give a number: 2
Give a number: 3
Give a number: 4
Give a number: 5
Give a number: -1
Sum: 14
Maximum: 5

Test number 2
Give a number: 10
Give a number: 12
Give a number: 14
Give a number: 16
Give a number: -1
Sum: 52
Maximum: 16

Test number 3
Give a number: 9
Give a number: 9
Give a number: 9
Give a number: 9
Give a number: 9
Give a number: -1
Sum: 45
Maximum: 9