[백준]단계 - 입출력과 사칙연산

2557 - Hello World

console.log('Hello world');

10718 - We love kriii

i = 0;
while(i < 2) {
  console.log('강한친구 대한육군');
  i++;
}

10171 - 고양이

var cat =
'\\    /\\ \n )  ( \')\n(  /  )\n \\(__)|';
     
console.log(cat);

1000 - A+B

const fs = require('fs');
const input = fs.readFileSync('/dev/stdin').toString().split(' ');
console.log(parseInt((input[0]))+parseInt(input[1]));

10869 - 사칙연산

const fs = require('fs');
const input = fs.readFileSync('/dev/stdin').toString().split(' ');
const a = parseInt(input[0]);
const b = parseInt(input[1]);
console.log(a+b);
console.log(a-b);
console.log(a*b);
console.log(parseInt(a/b));
console.log(a%b);

2588 - 곱셈

const fs = require('fs');
const input = fs.readFileSync('/dev/stdin').toString().split('\n');
let a = input[0];
let b = input[1];
console.log(parseInt(a)*parseInt(b[2]));
console.log(parseInt(a)*parseInt(b[1]));
console.log(parseInt(a)*parseInt(b[0]));
console.log(parseInt(a)*parseInt(b));

const readline = require('readline');

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

let input = [];

rl.on('line', function (line) {
    input.push(line);
}).on('close', function () {
    let num1 = Number(input[0]);
    let num2 = Number(input[1]);
	//몫을 이용
    console.log(num1 * (num2 % 10));
    console.log(num1 * Math.floor((num2 % 100) / 10));
    console.log(num1 * Math.floor(num2 / 100));
    console.log(num1 * num2);

    process.exit();
});