如何使用蒙特卡罗方法计算pi [英] How do I calculate pi using monte carlo method

问题描述

输出应列表为列出n，c和Pi的每个估计值的Pi值，直到用户在运行时输入的选定点数。例如，如果用户输入500，则应显示500行。



我尝试过：

 Console.Write（ 请输入随机数编号：）; 
 string input = Console.ReadLine（）; 
 n =  double  .Parse（输入）; 
 
  if （（n<  1 ）||（n>  500 ））
 Console.WriteLine（ 错误！数字应在1到500之间！ 
 +  请再试一次 ）; 
 
  else  
  while （n<  500 ）
 {
 Console.Write（  N + n）; 
 n ++; 
} 
 {
  int  x =  1 ; 
  double  y =  1 ; 
 c = x * x + y * y; 
 c ++; 
} 
 {
 Pi =  4  * c / n; 
 Pi ++; 
 Console.WriteLine（  N：{0}，n）; 
 Console.WriteLine（  C：{0}，c）; 
 Console.WriteLine（  Pi：{0}，Pi）; 
} 

解决方案

嗯。

您希望该代码做什么？

你从用户那里读了一个随机数 - 这是一个奇怪的想法 - 如果它超出限制（你没有告诉他）你打印一条消息，但继续使用无论如何...

否则，你把这个值的所有数字都写到500以上，并继续。

无论你之前打印什么，你设置 c 通过一个复杂的方法得到三个，然后假设pi是0.024，加一个，然后打印

 N： 500  
 C： 3  
 Pi： 1 。 024  

我知道这可能是你的功课，但是你需要扔掉它，坐下来，并试着弄清楚你应该在这里做什么 - 因为这甚至不像你老师问的那样对于！ ：笑：

The output should be tabulated to list n, c and the Pi value for each estimate of Pi up to a chosen number of points input by the user at run time. If the user input 500 for example, there should be 500 rows displayed.

What I have tried:

Console.Write("Please enter a Random Number:  ");
string input = Console.ReadLine();
n = double.Parse(input);

if ((n < 1) || (n > 500))
    Console.WriteLine("Error!The number should be between 1 and 500!"
        + "Please try again");

else
    while (n < 500)
    {
        Console.Write("N" + n);
        n++;
    }
{
    int x = 1;
    double y = 1;
    c = x * x + y * y;
    c++;
}
{
    Pi = 4 * c / n;
    Pi++;
    Console.WriteLine("N : {0}", n);
    Console.WriteLine("C: {0}", c);
    Console.WriteLine("Pi: {0} ", Pi);
}

解决方案

Um.
What do you expect that code to do?
You read a "random number" from the user - which is a strange idea to start with - and if it's outside the limits (that you didn't tell him) you print a message, but continue to use it anyway...
Otherwise, you write all the numbers from that value up to 500 inclusive and continue anyway.
Regardless of what you printed earlier, you set c to three by a convoluted method, and then assume that pi is 0.024, add one to it, and print

N : 500
C : 3
Pi: 1.024

I know this is probably your homework, but you need to throw that away, sit down, and try to work out exactly what you are supposed to be doing here - because that isn't even close to what you teacher asked for! :laugh:

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