Q2

using System; using System.Collections.Generic; using System.Text; namespace EulerProject { class Program { static void question() { /* 4백만을 초과하지 않는 피보나치 수열에서 짝수인 수를 모두 더하라 */ Fibonacci fi = new Fibonacci(); double result = 0; while (true) { double currNumber = fi.getNext(); if (currNumber % 2 == 0) { if (currNumber > 4000000) break; else result += currNumber; } } Console.WriteLine("Q2: {0}", result); } static void Main(string[] args) { question(); } } class Fibonacci { public double index; private double prevNumber; private double currNumber; public Fibonacci() { index = 0; prevNumber = 1; currNumber = 1; } public double getNext() { index++; if (index < 3) { return 1; } else { double result = prevNumber + currNumber; prevNumber = currNumber; currNumber = result; return result; } } } }