//定义两个变量存储每一项
BigInteger a = 1;
BigInteger b = 1;
Console.WriteLine("请输入循环次数");
int num = int.Parse(Console.ReadLine());
if (num > 100)
{
    Console.WriteLine("次数大于100，将更改为100");
    num = 100;
}
if (num < 4)
{
    Console.WriteLine("次数小于4，将更改为4");
    num = 4;
}
Console.WriteLine("1");
Console.WriteLine("1");
//For循环,次数为输入的数
for (int i = 3; i < num; i++)
{
    //定义一个变量作转换用
    BigInteger c = BigInteger.Add(a,b);
    a = b;
    b = c;
    Console.WriteLine("{0}", c);
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Threading.Tasks;
 
namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            //定义两个变量存储每一项
            BigInteger a = 1;
            BigInteger b = 1;
            Console.WriteLine("请输入循环次数");
            int num = int.Parse(Console.ReadLine());
            if (num > 100)
            {
                Console.WriteLine("次数大于100，将更改为100");
                num = 100;
            }
            if (num < 4)
            {
                Console.WriteLine("次数小于4，将更改为4");
                num = 4;
            }
            Console.WriteLine("1");
            Console.WriteLine("1");
            //For循环,次数为输入的数
            for (int i = 3; i < num; i++)
            {
                //定义一个变量作转换用
                BigInteger c = BigInteger.Add(a,b);
                a = b;
                b = c;
                Console.WriteLine("{0}", c);
            }
        }
    }
}