循环语句的阶乘
本文关键字:阶乘 语句 循环 | 更新日期: 2023-09-27 17:56:05
我无法让这个 for 循环执行它应该执行的阶乘。它似乎只循环一次。
static void Main(string[] args)
{
int a;
int total=1;
Console.WriteLine("Please enter any number");
a = Convert.ToInt32 (Console.ReadLine());
total = a;
for (int intcount = a; intcount<= 1; intcount--)
{
total *= intcount;
}
Console.WriteLine("Factorial of number '{0}' is '{1}'", a, total);
Console.ReadKey();
intcount<= 1
一旦你开始循环,这是错误的,所以循环会立即退出。
您可能希望在该数字大于 1 时进行循环。
您应该
将初始化从total = a
更改为total = 1
,intcount<= 1
将初始化更改为intcount > 1
,如下所示:
var a = 5;
var total = 1;
for (int intcount = a; intcount > 1; intcount--)
{
total *= intcount;
}
Console.WriteLine (total);//prints 120
total = 0;
for (int intcount = 1; intcount<= a; intcount++)
{
total *= intcount;
}
或
total = a;
for (int intcount = a; intcount>= 1; intcount--)
{
total *= intcount;
}
值大于 1 时循环:
for (int intcount = a; intcount > 1; intcount--) {
total *= intcount;
}
或者,循环到以下值:
for (int intcount = 2; intcount <= a; intcount++) {
total *= intcount;
}
完整的解决方案就在这里! 经过测试并工作。递归实现以及基本实现
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication50
{
class Program
{
static void Main(string[] args)
{
NumberManipulator manipulator = new NumberManipulator();
Console.WriteLine("Please Enter Factorial Number:");
int a= Convert.ToInt32(Console.ReadLine());
Console.WriteLine("---Basic Calling--");
Console.WriteLine("Factorial of {0} is: {1}" ,a, manipulator.factorial(a));
Console.WriteLine("--Recursively Calling--");
Console.WriteLine("Factorial of {0} is: {1}", a, manipulator.recursively(a));
Console.ReadLine();
}
}
class NumberManipulator
{
public int factorial(int num)
{
int result=1;
int b = 1;
do
{
result = result * b;
Console.WriteLine(result);
b++;
} while (num >= b);
return result;
}
public int recursively(int num)
{
if (num <= 1)
{
return 1;
}
else
{
return recursively(num - 1) * num;
}
}
}
}