1: using System;
2: using System.Collections;
3:
4: namespace TestConsoleApplication
5: {
6: internal class Program
7: {
8: private static void Main(string[] args)
9: {
10: foreach (int x in GetFibonacciNumbers(20))
11: {
12: Console.WriteLine(x);
13: }
14:
15: Console.ReadKey();
16: }
17:
18:
19: public static IEnumerable GetFibonacciNumbers(int n)
20: {
21: int p1 = 1;
22: int p2 = 0;
23:
24: yield return 0;
25: yield return 1;
26:
27: for (int i = 0; i < n; i++)
28: {
29: int sum = p1 + p2;
30: yield return sum;
31: p2 = p1;
32: p1 = sum;
33: }
34: }
35: }
36: }