Question

在一个模板类的构造函数中调用另一个模板类的对象时出错...

#ifndef VECTOR_POINTER_H
#define VECTOR_POINTER_H

#include "vector_array.h"
#include "vector_date.h"

template<class T>
class vector_pointer{
public:
vector_pointer(vector_array<T>& array,unsigned int index):data(array.ap),sub(index){++(data->use);};
~vector_pointer(){if(--*data->use==0) delete data;};

T& operator[](unsigned index){return (*data)[index];};
T& operator*(){return (*data)[sub];};
private:
vector_date<T>* data;
unsigned int sub;
};

#endif
编译时报错：
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(11) : error C2629: unexpected 'class vector_pointer<T> ('
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(19) : see reference to class template instantiation 'vector_pointer<T>' being compiled
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(11) : error C2334: unexpected token(s) preceding ':'; skipping apparent function body
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(19) : see reference to class template instantiation 'vector_pointer<T>' being compiled
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(17) : error C2143: syntax error : missing ';' before '<'
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(19) : see reference to class template instantiation 'vector_pointer<T>' being compiled
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(17) : error C2501: 'vector_date' : missing storage-class or type specifiers
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(19) : see reference to class template instantiation 'vector_pointer<T>' being compiled
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(17) : error C2059: syntax error : '<'
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(19) : see reference to class template instantiation 'vector_pointer<T>' being compiled
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(17) : error C2238: unexpected token(s) preceding ';'
d:\vc文件\数据结构\vector容器实现\vector_pointer.h(19) : see reference to class template instantiation 'vector_pointer<T>' being compiled
d:\vc文件\数据结构\vector容器实现\vector_date.h(9) : error C2059: syntax error : '<'
d:\vc文件\数据结构\vector容器实现\vector_date.h(19) : see reference to class template instantiation 'vector_date<T>' being compiled
d:\vc文件\数据结构\vector容器实现\vector_date.h(9) : error C2238: unexpected token(s) preceding ';'
d:\vc文件\数据结构\vector容器实现\vector_date.h(19) : see reference to class template instantiation 'vector_date<T>' being compiled
d:\vc文件\数据结构\vector容器实现\vector_array.h(18) : error C2989: 'vector_array' : template class has already been defined as a non-template class
d:\vc文件\数据结构\vector容器实现\vector_date.h(9) : see declaration of 'vector_array'
D:\VC文件\数据结构\vector容器实现\main.cpp(9) : warning C4508: 'main' : function should return a value; 'void' return type assumed
Error executing cl.exe.
什么原因？
vector_array<T>代码：
#ifndef VECTOR_ARRAY_H
#define VECTOR_ARRAY_H

#include "vector_date.h"
#include "vector_pointer.h"

template<class T>
class vector_array{
public:
friend class vector_pointer<T>;
vector_array(unsigned size):ap(new vector_data(size)){};
~vector_array(){if(--*ap->use==0) delete ap;};

T& operator[](unsigned index){return (*ap)[index];};

private:
vector_date<T>* ap;
};

#endif

vector_pointer<T>代码：

#ifndef VECTOR_POINTER_H
#define VECTOR_POINTER_H

#include "vector_array.h"
#include "vector_date.h"

template<class T>
class vector_pointer{
public:
vector_pointer(vector_array<T>& array,unsigned int index):data(array.ap),sub(index){++(data->use);};
~vector_pointer(){if(--*data->use==0) delete data;};

T& operator[](unsigned index){return (*data)[index];};
T& operator*(){return (*data)[sub];};
private:
vector_date<T>* data;
unsigned int sub;
};

#endif

若以下回答无法解决问题，邀请你更新回答

Answer 1

这个要看到那两个类的.h文件才能断定啊

追问

带入如上，请帮忙确认下，我都快疯了...

追答

看不明白；因为光凭着你的代码没法确定，那两个模板类的实现是否在另外的Cpp文件中，如果是，需要包含Cpp文件而不是h文件
如果不是再试试看在
template
class vector_array{
public:
friend class vector_pointer;
之前加上这两行看看：
template
class vector_pointer;
并去掉#include "vector_pointer.h"
好像文件包含有点问题