C++ 在编译c++；控制台我的程序，我在包含的向量头文件中得到一个错误，可能吗？

这是完整的错误消息

> In file included from
> c:\mingw\bin\../lib/gcc/mingw32/4.7.2/include/c++/vector:63:0,
>                      from PlayerDatabase.h:4,
>                      from PlayerDatabase.cpp:6: 

c:\mingw\bin\../lib/gcc/mingw32/4.7.2/include/c++/bits/stl_construct.h:
> In function 'void std::_Construct(_T1*, const _T2&)':

> c:\mingw\bin\../lib/gcc/mingw32/4.7.2/include/c++/bits/stl_construct.h:85:13:
> error: expected type-specifier before 'static_cast'

> c:\mingw\bin\../lib/gcc/mingw32/4.7.2/include/c++/bits/stl_construct.h:85:13:
> error: expected ')' before 'static_cast'

> c:\mingw\bin\../lib/gcc/mingw32/4.7.2/include/c++/bits/stl_construct.h:85:13:
> error: expected ';' before 'static_cast' 

PlayerDatabase.h:4中包含的文件是向量头文件

我在我的cpp文件中使用了动态强制转换，将投手和击球手指针更改为基类baseballplayer指针，然后通过push_baxk（）将它们插入向量，这是问题吗

这是playerdatabase.h文件

#include <vector>
#include "BaseballPlayer.h"
#include "Hitter.h"
#include "Pitcher.h"

}

//复制构造函数

PlayerDatabase::PlayerDatabase(PlayerDatabase& right){
std::vector<BaseballPlayer*>::iterator begin, end;
begin=right.team.begin();
end=right.team.end();

while (begin!=end){
    Pitcher* pPlayer= dynamic_cast<Pitcher*>(*begin);
    if (pPlayer){
        Pitcher* pitcher= new Pitcher(*pPlayer);
        team.push_back(dynamic_cast<BaseballPlayer*>(pitcher));
    }

    else{
        Hitter* hPlayer= dynamic_cast<Hitter*>(*begin);
        Hitter* hitter= new Hitter(*hPlayer);
        team.push_back(dynamic_cast<BaseballPlayer*>(hitter));
    }

    begin++;
}

}

这部分有什么问题吗

 std::vector<BaseballPlayer*>::iterator begin, end;
 begin=right.team.begin();
 end=right.team.end();

std:：vector:：迭代器开始，结束；
begin=right.team.begin（）；
end=right.team.end（）；

代码太多了！但有几件事是错误的：

PlayerDatabase(PlayerDatabase&); // this is the one the error is complaining about

这声明了一个可变副本构造函数。如果你想要的话没关系，但你可能不想要。您希望这样做：

PlayerDatabase(PlayerDatabase const&);

对于赋值运算符也是一样，除非它需要修改源（而您不想这样做），否则它应该是：

PlayerDatabase& operator= (PlayerDatabase const&);

---

我在您的整个代码中没有看到一个

const

限定符，因此您可能不知道const的正确性。你应该对这个主题做一些研究，但它基本上是说这个操作是否会修改给定的参数。

你也可以显示你的代码吗？你不可能在你的CPP文件中有一个

\define new DEBUG\u new

？对于那些感兴趣的人，我的第85行是

：：new（static\u cast（\u p））\u T1（\u value）

您是否在

vector

之前包含的任何头文件中定义了

new

其他内容？很可能您在

之前包含的“cppmendbg.h”

中出错了

谢谢，我在声明“PlayerDatabase（const PlayerDatabase&）”时总是出错

PlayerDatabase::~PlayerDatabase(){
std::vector<BaseballPlayer*>::iterator iter;
for (iter=team.begin();iter!=team.end();iter++){
    if (*iter)
        delete *iter;
    *iter=nullptr;
}
team.clear();

void PlayerDatabase::print_team(std::ofstream& outputFile){
int totalHits=0, totalAtBats=0, totalEarnedRuns=0;
float totalInningsPitched=0.0;

std::vector<BaseballPlayer*>::iterator begin, end;
begin=team.begin();
end=team.end();
int member=1;

while (begin!=end){
    std::cout<<"Member "<<member<<std::endl;
    (*begin)->print_player(outputFile);

    Pitcher* pPlayer= dynamic_cast<Pitcher*>(*begin);
    if (pPlayer){
        totalEarnedRuns+=pPlayer->earnedRuns;
        totalInningsPitched+=pPlayer->inningsPitched;
        begin++;
        member++;
    }

    else{
        Hitter* hPlayer= dynamic_cast<Hitter*>(*begin);
        totalHits+=hPlayer->hits;
        totalAtBats+=hPlayer->atBats;
        begin++;
        member++;
    }

}

if(totalAtBats==0||totalInningsPitched==0.0){

    if(totalAtBats==0&&totalInningsPitched==0.0){
        std::cout<<"Team Batting Average: "<<"n/a"<<std::endl;
        std::cout<<"Team ERA: "<<"n/a"<<std::endl;
    }
    else if (totalAtBats==0){
        std::cout<<"Team Batting Average: "<<"n/a"<<std::endl;
        std::cout<<"Team ERA: "<<(totalEarnedRuns/totalInningsPitched*9)<<std::endl;
    }
    else {
        std::cout<<"Team Batting Average: "<<std::fixed<<std::setprecision(3)<<totalHits/(double)totalAtBats<<std::endl;
        std::cout<<"Team ERA: "<<"n/a"<<std::endl;
    }
}

else{
    std::cout<<"Team Batting Average: "<<std::fixed<<std::setprecision(3)<<totalHits/(double)totalAtBats<<std::endl;
    std::cout<<"Team ERA: "<<(totalEarnedRuns/totalInningsPitched*9)<<std::endl;
}

void PlayerDatabase::load_team(std::ifstream& input){
int counter=1;
while (!input.eof()){
    char playerType;
    input.get(playerType);

    if (playerType==HITTER){
        Hitter* hitter= new Hitter;
        hitter->load_player(input);
        std::cout<<"Loading member "<<counter<<std::endl;
        team.push_back(dynamic_cast<BaseballPlayer*>(hitter));
        counter++;
    }

    else if (playerType==PITCHER){
        Pitcher* pitcher= new Pitcher;
        pitcher->load_player(input);
        std::cout<<"Loading member "<<counter<<std::endl;
        team.push_back(dynamic_cast<BaseballPlayer*>(pitcher));
        counter++;
    }

}

void PlayerDatabase::create_good_team(){

std::vector<BaseballPlayer*> goodTeam;

std::vector<BaseballPlayer*>::iterator begin, end;
begin=team.begin();
end=team.end();

while (begin!=end){

    Pitcher* pPlayer= dynamic_cast<Pitcher*>(*begin);
    if (pPlayer){
        if(pPlayer->goodPitcher()){

            goodTeam.push_back(dynamic_cast<BaseballPlayer*>(pPlayer));
        }
        else {
            if (*begin)
                delete *begin;
            *begin=nullptr;
        }
        begin++;
    }

    else{
        Hitter* hPlayer= dynamic_cast<Hitter*>(*begin);
        if(hPlayer->goodHitter()){
            goodTeam.push_back(dynamic_cast<BaseballPlayer*>(hPlayer));
        }
        else {
            if (*begin)
                delete *begin;
            *begin=nullptr;
        }
        begin++;
    }
}
team.clear();
team=goodTeam;

void PlayerDatabase::create_small_team(){
if(get_team_count()>=REDUCE_BY){
    std::vector<BaseballPlayer*>::iterator first, fifth;
    first= team.begin();
    fifth=first+REDUCE_BY;

    while (first!=fifth){
        if (*first)
            delete *first;
        *first=nullptr;
        first++;
    }
    team.erase(team.begin(),fifth);
}

else {
    std::vector<BaseballPlayer*>::iterator first,last;
    first= team.begin();
    last=team.end();
    while(first!=last){
        if (*first)
            delete *first;
        *first=nullptr;
        first++;
    }
    team.clear();
}

int PlayerDatabase::get_team_count(){
return team.size();

 std::vector<BaseballPlayer*>::iterator begin, end;
 begin=right.team.begin();
 end=right.team.end();

PlayerDatabase(PlayerDatabase&); // this is the one the error is complaining about

PlayerDatabase(PlayerDatabase const&);

PlayerDatabase& operator= (PlayerDatabase const&);