Question

javascript Write a function named sumNumbers that accepts a nonnegative number, adds up all of the numbers between 0 and the number (inclusive), and returns the sum.

Answer 1

Answer:

1. function sumNumbers(num){
2.        let sum = 0;
3.        for(let i=0; i <= num; i++){
4.            sum += i;        
5.        }
6.        return sum;
7. }

Explanation:

Firstly, let's create a function named sumNumbers() that take one input parameter, num (Line 1).

Declare a variable, sum, to hold the value of total number between 0 and the input number (Line 2). Initialize it with 0 value.

Create a for-loop to traverse through the numbers started from 0 till input number (Line 3). In the loop, add the each number to sum variable (Line 4).

At last, return the sum as output (Line 6).