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【C】 4位数字的猜数字游戏

作者:丰子小 / 发布于2013/1/8/ 630

支持判断输入的是否为4位数，应该算比较纯的C++实现吧。由于VS2012有些C++11特性还不支持，所以我初始化vector容器时还是先定义了一个char数组。

#ifndef GUESSNUMBER_H
#define GUESSNUMBER_H

#include <ctime>
#include <iostream>
#include <string>

class Guessnum{
public:
	Guessnum(){
		Generate(answer);
	}
	void Guess_start();
private:
	void Generate(std::string &str);
	void checknumber(int number)
	{
		if(number<1000||number>9999)
			throw(std::runtime_error("Error input!"));
	}
	std::string answer;
};

#endif


#include "Guessnumber.h"
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <ctime>

using std::cin;
using std::cout;
using std::endl;
using std::string;
using std::vector;

void Guessnum::Guess_start()
{
	for(int cnt=0;cnt!=10;++cnt)
	{
		int number;
		int cn_A=0,cn_B=0;
		cin>>number;
		try{
			checknumber(number);
		}
		catch(std::runtime_error &wrong)
		{
			throw(wrong);
			return;
		}
		string str_b=std::to_string(number);
		for(int i=0;i!=4;++i)
			if(answer[i]==str_b[i])
				++cn_A;
		for(int i=0;i!=4;++i)
			cn_B+=std::count(answer.begin(),answer.end(),str_b[i]);
		cout<<"        "<<cn_A<<'A'<<cn_B<<'B'<<endl;
		if(cn_A==4)
		{
			cout<<"correct!"<<endl;
			return;
		}
	}
	cout<<"You fail."<<endl;
	cout<<"The number is "<<answer<<endl;
}

void Guessnum::Generate(std::string &str)
{
	int ran;
	char ch[]={"0123456789"};
	vector<char>cvctor(ch,ch+10);
	str.resize(4);
	srand((unsigned)time(NULL));
	ran=1+rand()%9;
	str[0]=cvctor[ran];
	cvctor.erase(cvctor.begin()+ran);
	ran=rand()%9;
	str[1]=cvctor[ran];
	cvctor.erase(cvctor.begin()+ran);
	ran=rand()%8;
	str[2]=cvctor[ran];
	cvctor.erase(cvctor.begin()+ran);
	ran=rand()%7;
	str[3]=cvctor[ran];
}



#include <iostream>
#include <ctime>
#include "Myclock.h"
#include "Guessnumber.h"

using std::cin;
using std::cout;
using std::endl;

int main()
{
	Myclock clc("Guessnum");
	Guessnum gnum;
	cout<<"?????????????????4λ???????????????????????????????????A??B??????A?"
		"?????????λ??????????????B??????????????????λ?ò??????????,????10?λ??"<<endl;
	try{
		gnum.Guess_start();
	}
	catch(std::runtime_error& err)
	{
		cout<<err.what()<<endl;
	}
}

试试其它关键字

　猜数字　

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.4位数字的猜数字游戏