Day 2:Conditional Statements.js

'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
        if(score>25 && score<=30)
        grade='A';
        else if(score>20 && score<=25)
        grade='B';
        else if(score>15 && score<=20)
        grade='C';
        else if(score>10 && score<=15)
        grade='D';
        else if(score>5 && score<=10)
        grade='E';
        else if(score>=0 && score<=5)
        grade='F';
    
    return grade;
}


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