Day2.ConditionalStatements.js

// 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, , denoting the number of points Julia earned on an exam. It must return the letter corresponding to her  according to the following rules:

// If , then .
// If , then .
// If , then .
// If , then .
// If , then .
// If , then .
// Input Format

// Stub code in the editor reads a single integer denoting  from stdin and passes it to the function.

// Constraints

// Output Format

// The function must return the value of  (i.e., the letter grade) that Julia earned on the exam.

// Sample Input 0

// 11
// Sample Output 0

// D
// Explanation 0

// Because , it satisfies the condition  (which corresponds to D). Thus, we return D as our answer.

'use strict';

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', inputStdin => {
    inputString += inputStdin;
});

process.stdin.on('end', _ => {
    inputString = inputString.trim().split('\n').map(string => {
        return string.trim();
    });
    
    main();    
});

function readLine() {
    return inputString[currentLine++];
}

function getGrade(score) {
    let grade;
    // Write your code here    
    switch (true) {
        case (score <= 5):
            grade = "F";
            break;
        case (score <= 10):            
            grade = "E";
            break;
        case (score <= 15):
            grade = "D";
            break;
        case (score <= 20):
            grade = "C";
            break;
        case (score <= 25):
            grade = "B";
            break;
        case (score <= 30):
            grade = "A";
            break;
    }
    
    return grade;
}

function main() {
    const score = +(readLine());
    
    console.log(getGrade(score));
}