💻代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp15
{
    internal class Program
    {
        static void Main(string[] args)
        {
            IEnumerable<int> fibonaccis = Fibonacci(10);
            foreach (var f in fibonaccis)
            {
                Console.Write("{0} ", f);
            }
            IEnumerable<int> fibonaccis1 = FibonacciYield(10);
            foreach (var f in fibonaccis1)
            {
                Console.Write("{0} ", f);
            }
            Console.ReadLine();
        }
        public static List<int> Fibonacci(int count)
        {
            int p = 1;
            int c = 1;
            List<int> result = new List<int>();
            for (int i = 0; i < count; i++)
            {
                result.Add(p);
                Thread.Sleep(500);
                int temp = p + c;
                p = c;
                c = temp;
            }
            return result;
        }
        public static IEnumerable<int> FibonacciYield(int count)
        {
            int p = 1;
            int c = 1;
            for (int i = 0; i < count; i++)
            {
                yield return p;
                Thread.Sleep(500);
                int temp = p + c;
                p = c;
                c = temp;
            }
        }
    }
}

📕参考文献

C#中的yield_c# yield-CSDN博客