编译错误：类名称未命名类型。 [英] Compilation Error:Class name does not name a type.
问题描述
hi groups，
i创建了2.cpp和.h（标题）文件和一个main.cpp文件，例如
as file1.cpp和.h类似的file2.cpp& .h。
i也包含了适当的头文件。现在我正在创建类A的
对象（在file1.h中声明和定义）到类
B（在file2.h中声明并定义）。我收到一个错误
class a没有命名一个类型，我已经创建的对象是
未声明。我无法理解为什么会出现这个错误，因为我还有b $ b包括相关的头文件。
可以帮助解决这个问题。
提前付款...
sharat写道：
hi groups，
i创建了2 .cpp和.h（标题）文件和一个main.cpp文件，例如
作为file1.cpp和.h类似file2.cpp& .h。
i也包含了适当的头文件。现在我正在创建类A的
对象（在file1.h中声明和定义）到类
B（在file2.h中声明并定义）。我收到一个错误
class a没有命名一个类型，我已经创建的对象是
未声明。我无法理解为什么会出现这个错误，因为我还有b $ b包括相关的头文件。
可以帮助解决这个问题。
请发布一个给出问题的最小例子。否则所有
你都可以猜到。
-
Ian Collins。
4月19日凌晨2:28，sharat< aaliya.zar ... @ gmail.comwrote：
hi groups，
i创建了2 .cpp和.h（标题）文件和一个main.cpp文件，例如/ b $ b作为file1.cpp和.h类似文件2。 cpp& .h。
i也包含了适当的头文件。现在我正在创建类A的
对象（在file1.h中声明和定义）到类
B（在file2.h中声明并定义）。我收到一个错误
class a没有命名一个类型，我已经创建的对象是
未声明。我无法理解为什么会出现这个错误，因为我还有b $ b包括相关的头文件。
可以帮助解决这个问题。
提前付款...
除非您显示代码否则。
请注意< A级和< a类不对应。
所以错误可能是一个基本错误。
这是我的代码..
//file1.cpp
使用命名空间std;
#include" file1.h"
void plot_class :: fun1（）
{
cout<<" \ n PLOT CLASS \ n" ;;
}
//file1.h
#ifndef FILE1_H
#define FILE_H
#include" file2.h"
class plot_class
{
public：
int p;
zone_class zone_obj;
void fun1（）;
};
#endif
同样，
//file2.cpp
#include" file2.h"
void zone_class :: fun_zone（）
{
cout<<" \ n zone class \\\
" ;;
}
//file2.h
#ifndef FILE2_H
#define FILE2_H
#include" fil e1.cpp
class zone_class
{
public：
int z;
plot_class plot_obj;
void fun_zone（）;
};
#endif
和main.cpp如下。
#include< iostream>
#include" file1.cpp"
#include" file2.cpp"
using namespace std;
int main（）
{
cout<<" \ n Hello World \ n";
zone_class zone_obj1;
zone_obj1.fun_zone（）;
< br $>
}
i我正在使用gcc编译器..编译后我得到以下
错误
hi groups,
i have created 2 .cpp and .h(header) file and one main.cpp file, such
as file1.cpp and .h similarly file2.cpp & .h .
i have include the apropriate header files also .now i am creating the
object of class A (which is declare and define in file1.h) into class
B(which is declare and define in file2.h). i am getting an error that
"class a " doesnot name a type and the object i have creted is
undeclared . i am unable to get why this error is coming ,as i have
includede the related header files also.
can any body help to solve this problem.
Thanx in advance...
sharat wrote:hi groups,
i have created 2 .cpp and .h(header) file and one main.cpp file, such
as file1.cpp and .h similarly file2.cpp & .h .
i have include the apropriate header files also .now i am creating the
object of class A (which is declare and define in file1.h) into class
B(which is declare and define in file2.h). i am getting an error that
"class a " doesnot name a type and the object i have creted is
undeclared . i am unable to get why this error is coming ,as i have
includede the related header files also.
can any body help to solve this problem.
Please post a minimal example that gives your problem. Otherwise all
you can hope for is a guess.
--
Ian Collins.
On Apr 19, 2:28 am, sharat <aaliya.zar...@gmail.comwrote:hi groups,
i have created 2 .cpp and .h(header) file and one main.cpp file, such
as file1.cpp and .h similarly file2.cpp & .h .
i have include the apropriate header files also .now i am creating the
object of class A (which is declare and define in file1.h) into class
B(which is declare and define in file2.h). i am getting an error that
"class a " doesnot name a type and the object i have creted is
undeclared . i am unable to get why this error is coming ,as i have
includede the related header files also.
can any body help to solve this problem.
Thanx in advance...
Not unless you show code.
Note that < class A and < class a do not correspond.
So the error is probably a fundamental one.
here is my code ..
//file1.cpp
using namespace std;
#include "file1.h"
void plot_class::fun1()
{
cout<<"\n PLOT CLASS \n";
}
//file1.h
#ifndef FILE1_H
#define FILE_H
#include"file2.h"
class plot_class
{
public:
int p;
zone_class zone_obj;
void fun1();
};
#endif
similarly ,
//file2.cpp
#include"file2.h"
void zone_class ::fun_zone()
{
cout<<"\n zone class \n";
}
//file2.h
#ifndef FILE2_H
#define FILE2_H
#include"file1.cpp"
class zone_class
{
public:
int z;
plot_class plot_obj;
void fun_zone();
};
#endif
and main.cpp is as follows.
#include<iostream>
#include"file1.cpp"
#include"file2.cpp"
using namespace std;
int main()
{
cout<<"\n Hello World\n";
zone_class zone_obj1;
zone_obj1.fun_zone();
}
i am using gcc compiler ..after compiling i am getting the following
errors
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