[백준 단계별로 풀어보기] 2. if문 (feat.NodeJS)

1330번: 두 수 비교하기

1330번: 두 수 비교하기

const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

let inputString;
const onInput = (input) => inputString = input;

const onClose = () => {
    const [num1, num2]  = inputString.split(" ");

    if(Number(num1) > Number(num2)) {
      console.log(">");
    } else if (Number(num1) < Number(num2)) {
      console.log("<");
    } else if (Number(num1) === Number(num2)) {
      console.log("==");
    }

    process.exit();
}

rl.on('line', onInput)
  .on('close', onClose);

9498번: 시험 성적

9498번: 시험 성적

const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

let score = 0;
const onInput = (input) => score = Number(input);

const onClose = () => { 
   if(score >= 90) {
     console.log('A');
   } else if(score >= 80) {
     console.log('B');
   } else if(score >= 70) {
    console.log('C');
   } else if(score >= 60) {
    console.log('D');
   } else {
    console.log('F');
   }

   process.exit();
}

rl.on('line', onInput)
  .on('close', onClose);

2753번: 윤년

2753번: 윤년

const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

let year = 0;
const onInput = (input) => year = Number(input);

const onClose = () => {
  if(year % 400 === 0)
  {
    console.log(1);
  } else if((year % 4 === 0) && (year % 100 !== 0)) {
    console.log(1);
  } else {
    console.log(0);
  }
      
  process.exit();
}

rl.on('line', onInput)
  .on('close', onClose);

14681번: 사분면 고르기

14681번: 사분면 고르기

const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

const array = [];
const onInput = (input) => array.push(Number(input));

const onClose = () => {
  const [num1, num2] = array;

  if (num1 > 0 && num2 > 0) {
    console.log(1);
  } else if (num1 < 0 && num2 > 0) {
    console.log(2);
  } else if (num1 < 0 && num2 < 0) {
    console.log(3);
  } else if (num1 > 0 && num2 < 0) {
    console.log(4);
  }  
      
  process.exit();
}

rl.on('line', onInput)
  .on('close', onClose);

2884번: 알람 시계

2884번: 알람 시계

const readline = require('readline');
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

let time;
const onInput = (input) => time = input;

const onClose = () => {
  let [hour, minute] = time.split(" ");
  hour = Number(hour);
  minute = Number(minute);
  
  minute = minute - 45;
  if(minute < 0) {
    hour -= 1;
    if(hour < 0) {
      hour += 24;
    }
    minute += 60 ;
  }  

  console.log(`${hour} ${minute}`);      
  process.exit();
}

rl.on('line', onInput)
  .on('close', onClose);