ctx.cpp

小游戏程序比较简单的一个C++程序用

// ctx.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <stdlib.h> 
#include <stdio.h> 
#include <ctime>
#include <memory.h>
#include <cmath>

using namespace std;
int main()
{
	int n,p[26],i,max,index,j;
	char m;
	double shang=0,my_p[26];
	while(1)
	{
		cout<<"please put in a number：";
		cin>>n;
		if(n<0)exit(0);
		char *a=new char [n];
		srand(time( NULL ) );
		memset(p,0,sizeof(int)*26);
		for (i=0;i<n;i++)
		{
			a[i]=rand()%26+65;
			p[a[i]-65]++;
		}
			for (i=0;i<26;i++)
		{
			my_p[i]=(double)p[i]/n;
		}
		for (i=0;i<26;i++)
		{
			if(my_p[i]!=0)
			shang+=(my_p[i]*log(1/my_p[i]))/log(2);
		}
		for(i=0;i<n;i++)
		cout<<a[i];
		cout<<endl;
		cout<<"------------"<<endl;
	
		cout<<"熵="<<shang<<endl;
		for(j=0;j<26;j++)
		{
			max=p[0];
			index=0;
			for(i=1;i<26;i++)
			{
				if (max<p[i])
				{
					max=p[i];
					index=i;
				}
			}
			m=(char)index+65;
			if(max>0)
			
			cout<<m<<"<"<<max<<">"<<endl;
			p[index]=-1;
		}

		delete []a;
cout<<"------------"<<endl;
	}
	return 0;
}