第14周项目3-OOP版电子词典

来源：互联网发布：linux tomcat 改端口编辑：程序博客网时间：2024/05/16 05:05
/*。*Copyright(c)2014,烟台大学计算机学院*All right reserved,*文件名：test.cpp*作者：毕玉堂*完成日期：2015年6月21日*版本号：v1.0*问题描述：*输入描述：*程序输出：*/#include <fstream>#include<iostream>#include<string>#include<cstdlib>using namespace std;//定义词条类class Word{public:    void set(string e, string c, string wc);    int compare(string);  //英语部分与给定字符串比较，等于返回，大于返回，小于返回-1    string getChinese();    string getWord_class();private:    string english;    string chinese;    string word_class;};void Word::set(string e, string c, string wc){    english=e;    chinese=c;    word_class=wc;}int Word::compare(string k){    return english.compare(k);}string Word::getChinese(){    return chinese;}string Word::getWord_class(){    return word_class;}//定义字典类class Dictionary{public:    Dictionary();    void searchWord(string k);private:    int BinSeareh(int low, int high, string k);    int wordsNum;    Word words[8000]; //用于保存词库};Dictionary::Dictionary(){    string e,c,wc;    wordsNum=0;    //将文件中的数据读入到对象数组中    ifstream infile("dictionary.txt",ios::in);  //以输入的方式打开文件    if(!infile)       //测试是否成功打开    {        cerr<<"dictionary open error!"<<endl;        exit(1);    }    while (!infile.eof())    {        infile>>e>>c>>wc;        words[wordsNum].set(e, c, wc);        ++wordsNum;    }    infile.close();}int Dictionary::BinSeareh(int low, int high, string key){    int mid;    while(low<=high)    {        mid=(low + high) / 2;        if(words[mid].compare(key)==0)        {            return mid; //查找成功返回        }        if(words[mid].compare(key)>0)            high=mid-1; //继续在w[low..mid-1]中查找        else            low=mid+1; //继续在w[mid+1..high]中查找    }    return -1; //当low>high时表示查找区间为空，查找失败}void Dictionary::searchWord(string key){    int low=0,high=wordsNum-1;  //置当前查找区间上、下界的初值    int index=BinSeareh(low, high, key);    if(index>=0)        cout<<key<<"--->"<<words[index].getWord_class()+"\t"<<words[index].getChinese();    else        cout<<"查无此词";    cout<<endl<<endl;}int main( ){    Dictionary dict;    string key;    do    {        cout<<"请输入待查询的关键词（英文）,0000结束："<<endl;        cin>>key;        if (key!="0000")        {            dict.searchWord(key);        }    }    while(key!="0000");    cout<<"欢迎再次使用！"<<endl<<endl;    return 0;}
运行结果：
0 0