Objective

In this challenge, we learn about if-else statements. Check out the attached tutorial for more details.

Task

Complete the getGrade(score) function in the editor. It has one parameter: an integer, score, denoting the number of points Julia earned on an exam. It must return the letter corresponding to her grade according to the following rules:

• If (25 < score <= 30), then grade = A.
• If (20 < score <= 25), then grade = B.
• If (15 < score <= 20), then grade = C.
• If (10 < score <= 15), then grade = D.
• If (5 < score <= 10), then grade = E.
• If (0 < score <= 5), then grade = F.

Objective

In this challenge, we practice declaring variables using the let and const keywords. Check out the attached tutorial for more details.

Task

1. Declare a constant variable, PI, and assign it the value Math.PI. You will not pass this challenge unless the variable is declared as a constant and named PI (uppercase).
2. Read a number, r, denoting the radius of a circle from stdin.
3. Use PI and r to calculate the area and perimeter of a circle having radius r.
4. Print area as the first line of output and print perimeter as the second line of output.

Objective

Today, we’re discussing JavaScript functions. Check out the attached tutorial for more details.

Task

Implement a function named factorial that has one parameter: an integer, n. It must return the value of n! (i.e., n factorial).

Objective

In this challenge, we practice using arithmetic operators. Check out the attached tutorial for resources.

Task

Complete the following functions in the editor below:

1. getArea(length, width): Calculate and return the area of a rectangle having sides length and width.
2. getPerimeter(length, width): Calculate and return the perimeter of a rectangle having sides length and width.

The values returned by these functions are printed to stdout by locked stub code in the editor.

Objective

Today, we’re discussing data types. Check out the attached tutorial for more details.

Task

Variables named firstInteger, firstDecimal, and firstString are declared for you in the editor below. You must use the + operator to perform the following sequence of operations:

1. Convert secondInteger to an integer (Number type), then sum it with firstInteger and print the result on a new line using console.log.
2. Convert secondDecimal to a floating-point number (Number type), then sum it with firstDecimal and print the result on a new line using console.log.
3. Print the concatenation of firstString and secondString on a new line using console.log. Note that must be printed first.