【C++面向对象程序设计】20170327英汉词典

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/*This is a c++ homework author@19160209*/#include<iostream>#include<stdio.h>#include<fstream>#include<cstdlib>#include<iomanip>#include<string>#include<sstream>using namespace std;class info{    public:    string han;    string eng;    info*next;};void menus(info *head);void print(int a,info* p);void freep(info *head);void order(int pt,info*head);void choose_to_do(info *head);info* findword(string tmp,int a,info *head);void freep(info* head){    info*p=head,*q=NULL;    do    {        q=p->next;        delete p;        p=q;    }while(p!=NULL);}void print(int a,info *p){    if(a==1||a==3) cout<<p->eng<<' ';    else cout<<p->han<<' ';}info* findword(string tmp,int a,info *head){    info *p;p=head;    if(a==1||a==3){       while(p!=NULL){           if(p->han==tmp) return p;           p=p->next;        }    }    else {        while(p!=NULL){            if(p->eng==tmp) return p;            p=p->next;        }    }    return NULL;}void menus(info *head){    int pt;    cout<<"FUNCTIONS:Please input your requirement."<<endl;    cout<<setw(10)<<1<<":(word) CHN---ENG"<<endl;    cout<<setw(10)<<2<<":(word) ENG---CHN"<<endl;    cout<<setw(10)<<3<<":(sentence) CHN---ENG"<<endl;    cout<<setw(10)<<4<<":(sentence) ENG---CHN"<<endl;    cin>>pt;    order(pt,head);}void order(int pt,info*head){    info*result;    switch(pt)    {        case 1:{            string tmp;            int c=1;            do{                    cin>>tmp;                    getche(c);                    result=findword(tmp,pt,head);                    if(result!=NULL) print(pt,result);                    else cout<<"CAN'T FIND!"<<endl;                    }while(c!='\n');            break;        }        case 2:{            string tmp;            cin>>tmp;            result=findword(tmp,pt,head);            if(result!=NULL) print(pt,result);            else cout<<"CAN'T FIND"<<endl;            break;        }        case 3:{            int k;string tmp;            cout<<"请您输入句子中包含的词汇个数。"<<endl;            cin>>k;            cout<<"请您输入句子（词汇以空格分开）。"<<endl;            for(int j=0;j<k;j++)            {                cin>>tmp;                result=findword(tmp,pt,head);                if(result!=NULL) cout<<result->eng<<" ";                else cout<<"***"<<" ";            }            cout<<endl;            break;        }        default:{            int k;            cout<<"Please input the NUMBER of words contained in a sentence."<<endl;            cin>>k;string tmp;            cout<<"Please input your sentence."<<endl;            for(int j=0;j<k;j++)            {                cin>>tmp;                result=findword(tmp,pt,head);                if(result!=NULL) cout<<result->han;                else cout<<"***"<<endl;            }cout<<endl;            break;        }    }}void choose_to_do(info *head){    int q=1;    while (q==1)    {        cout<<"DO you want to continue? Yes input '1'/No input '0'."<<endl;        cin>>q;        if (q!=0&&q!=1) {cout<<"Wrong order!"<<endl;                           q=1;}            else if(q==1) {                menus(head);choose_to_do(head);            }            if(q==0) q=0;    }}int main(){    cout<<"Welcome to the easy dictionary."<<endl;    ifstream fin("data.txt");    if(!fin)    {        cout<<"ERROR!"<<endl;        exit(0);    }    //cout<<"1"<<endl;    string s,str1,str2;    info *head;    head=new info;    info *p;p=head;    while(getline(fin,s))    {        istringstream sin(s);        sin>>str1>>str2;        info *newp;newp=new info;        newp->han=str1;        newp->eng=str2;        cout<<newp->han<<" "<<newp->eng<<endl;        p->next=newp;        p=newp;    }    p->next=NULL;    head=head->next;    //cout<<"2"<<endl;    menus(head);    choose_to_do(head);    freep(head);    return 0;}
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