在声明.h文件中一个结构和.c文件执行 [英] declaring a struct in .h file and implementing in .c file

问题描述

这是我的.h文件中：

struct _MyString;  
typedef struct _MyString MyString;

我想在.c文件及其成员申报。

i would like to declare its members in the .c file.

我尝试：

typedef struct MyString{
    char * _str;// pointer to the matrix
    unsigned long _strLength;
    }MyString;

，但它不工作。
我如何声明结构的承包商，​​客人在.c文件？

but it doesn't work. how do i declare the struct's memebers in the .c file?

感谢您

推荐答案

您只需要1的typedef。保持一个你已经有了.h文件，并删除所有其他人。

You need only 1 typedef. Keep the one you already have in the .h file and delete all others.

现在，该结构名为结构_MyString 。这是你应该在.c文件中定义的，而不是结构MyString中：注意到缺少的'_'

Now, the struct name is struct _MyString. That is what you should define in the .c file, not struct MyString: notice the absence of the '_'.

所以

.h文件中

struct _MyString;  
typedef struct _MyString MyString;

.c文件

#include "file.h"
struct _MyString {
    char * _str;// pointer to the matrix
    unsigned long _strLength;
};

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