C++

Forum

 
Headfile repeat problem.

akluffy (13)
If I have 3 head files: A.h B.h C.h


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
 
//============================A.h=================================
#ifndef A_
#define A_

#include "B.h" 

#endif


//============================B.h=================================
#ifndef _B
#define _B

#include "C.h" 

#endif

//============================C.h=================================
#ifndef _C
#define _C

#include "new"
#include <iostream>
//Lack of memory
class NoMem
{
public:
	NoMem(){}
};
//exception
void my_new_handler()
{
	throw NoMem();
}
new_handler Old_Handler_ = std::set_new_handler(my_new_handler);

#endif

//============================Main.h=================================
#include "A.h"

int main()
{
    NoMem example;
}




If run it, an error will be occurred :error C3861: 'NoMem': identifier not found

If I remove the #ifndef in file C, the program can run in the right way. But C.h is included twice if I do so. Is there any other method to solve this problem?

1
2
3
4
 
#ifndef _C
#define _C

#endif





Last edited on
Lowest0ne (1536)
> If I have 3 head files: A.h B.h C.h
> #include "Hanoi.h"

???
akluffy (13)
Sorry, it should be #include "A.h"
vlad from moscow (6539)
I do not see where C.h can be included twice. Before posting a code it is a good idea to check your code snip yourself.
Topic archived. No new replies allowed.