2
07/11/2024 2:20 pm
トピックスターター
Hello, I need to learn how can I find factorial of a particular number in C#?
For instance, "four factorial": "4!" means 1×2×3×4 = 24.
3件の回答
2
07/11/2024 2:22 pm
THIS IS HOW TO FIND FACTORIAL WITH WHILE LOOP:
using System;
class FindFactorialWhileLoop
{
static void Main()
{
{
Console.Write("Enter your factorial number = ");
decimal n = decimal.Parse(Console.ReadLine());
decimal result = 1;
while (true)
{
Console.Write(n);
if (n == 1)
{
break;
}
Console.Write(" * ");
result *= n;
n--;
}
Console.WriteLine(" = {0}", result);
}
}
}
1
07/11/2024 2:21 pm
The best option is to use the for loop:
using System;
class FindFactorial
{
static void Main()
{
Console.WriteLine("Please enter your number: ");
int n = int.Parse(Console.ReadLine());
int factorial = 1;
for (int i = 1; i <= n; i++)
{
factorial *= i;
}
Console.WriteLine(factorial);
}
}
1
07/11/2024 2:22 pm
Here is with the do-while loop:
using System;
class FindFactorialDoWhileLoop
{
static void Main()
{
Console.Write("Please enter your number: ");
int n = int.Parse(Console.ReadLine());
int factorial = 1;
do
{
factorial *= n;
n--;
} while (n > 0);
Console.WriteLine("n! = {0}", factorial);
}
}
