(原創(chuàng)精品)用隨機投點法計算π值【Compute π with dartpoint randomly

1、題目：Compute with dartpoint randomly 用隨機投點法計算值程序步驟：創(chuàng)建頭文件 randomnumber.h #ifndef RANDOMNUMBER_H#define RANDOMNUMBER_H#if _MSC_VER1000#pragma once#endif#include/隨機數(shù)類const unsigned long maxshort = 65536L;const unsigned long multiplier = 1194211693L;const unsigned long adder = 12345L;class RandomNumberpri

2、vate:/當前種子unsigned long randSeed;public:/構造函數(shù)，默認值0表示由系統(tǒng)自動產(chǎn)生種子RandomNumber(unsigned long s = 0);/產(chǎn)生0：n-1之間的隨機整數(shù)unsigned short Random(unsigned long n);/產(chǎn)生0,1)之間的隨機實數(shù)double fRandom(void);/產(chǎn)生種子RandomNumber:RandomNumber(unsigned long s)if (s = 0)randSeed = time(0); /用系統(tǒng)時間產(chǎn)生種子else randSeed = s; /由用戶提供種子/產(chǎn)

3、生0：n-1之間的隨機整數(shù)unsigned short RandomNumber:Random(unsigned long n)randSeed = multiplier * randSeed + adder;return (unsigned short)(randSeed 16) % n);/產(chǎn)生0,1)之間的隨機實數(shù)double RandomNumber:fRandom(void)return Random(maxshort) / double (maxshort);#endif編寫源程序 random.cpp/ random.cpp : Defines the entry point for the console application./#include stdafx.h#include randomnumber.h#includeusing namespace std;/ Compute with dartpoint randomlyint main(int argc, char* argv)RandomNumber dart;int i=0,k=0; /落入圓內(nèi)的點數(shù)為kint n=10000; /向正方形隨機地投擲10000個點double x,y;for(i=1;in;i+)x=dart.fRandom(); y=da