[积累]vector的详细使用, 包括iterator

来源：互联网发布：京东抄袭淘宝编辑：程序博客网时间：2024/06/07 12:10
#include<iostream>#include<string>#include<vector>using namespace std;class Phone{private:    string name;    string num;public:    Phone(string n , string nm){        name = n;        num = nm;    }    string getName(){        return name;    }    string getNum(){        return num;    }    void setNum(string mynum){        num = mynum;    }};//注意分号! vector<Phone*> phones;void add(){    string phone1;    //Add    while (true)    {        cin>>phone1;        if(!phone1.compare("Q"))            break;        string name = phone1.substr(0 ,phone1.find_first_of(","));        string num = phone1.substr(phone1.find_first_of(",")+1, phone1.length());        Phone* a = new Phone(name,num);        phones.push_back(a);    }}void read(){        //Read        for (vector<Phone*>::size_type j = 0; j != phones.size(); ++j)        {            Phone* phone = phones[j];            cout <<"Reading: "<< phone->getName()<<" Num: "<<phone->getNum()<<endl;        }}void read_iterator(){//使用iterator     for(vector<Phone*>::iterator itr1 = phones.begin();itr1!=phones.end();++itr1){Phone*phone=*itr1;cout<<"Reading:"<<phone->getName()<<"Num:"<<phone->getNum()<<endl;      }}void mydelete(){    //Delete    cout<<"input what you want delete: ";    string removeword;    cin>>removeword;    vector<Phone*>::iterator itr = phones.begin();    while (itr != phones.end())    {        if (!removeword.compare((*itr)->getName())){ //如果两个字符串相等, compare将返回0             cout << "Deleting: "<< (*itr)->getName()<<endl;            itr = phones.erase(itr); //注意如何删除!         }else        {          ++itr;        }    }}void modify(){ //modify    vector<Phone*>::iterator itr1 = phones.begin();    while (itr1 != phones.end())    {        string modifyword = "gb";        if (!modifyword.compare((*itr1)->getName())){            cout << "Modifying: "<< (*itr1)->getName()<<endl;            (*itr1)->setNum("0000000");}        ++itr1;    }}int main(){    add();    read();    mydelete();    modify();    cout<<"After motifying use iterator read: " <<endl;    read_iterator();    return 0;}
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