语法错误：缺少';'在'*'之前 [英] Syntax error: missing ';' before '*'

问题描述

我使用vs2010定义结构数据类型

例如

i am defining a struct data type using vs2010
for example

//b.h head file
#include "a.h"
typedef struct myStruct
{

testStruct * m; //missing ';' before '*'


};

而teststruct是一个结构在ah文件中定义



问题是我错过了'';''之前''*''错误但如果我将testStruct直接放在bh文件中工作。

任何人都可以找出原因。谢谢..

while teststruct is a struct defined in a.h file

the problem is I got missing '';'' before ''*'' error but if i put the testStruct directly in the b.h file it works.
Can anyone figure out why .thanks..

推荐答案

你交换了你的typedef的参数 - 它是 typedef {{type}} {{typename}} ，所以你的typedef应该是

You swapped the arguments of your typedef - it''s typedef {{type}} {{typename}} , so your typedef should be

typedef struct {
  ...
} myStruct; 

这不会导致错误，但如果 testStruct 的typedef看起来相同，编译器没有得到它，因此没有把这个名字识别为类型名称。



PS：当然不需要在C ++中使用typedef这种情况（或ANSI C）：你可以写：

This didn''t cause the error, but if the typedef for testStruct looks the same, the compiler didn''t get it, and therefore didn''t recognize that name as a type name.

P.S.: of course there is no need for a typedef in C++ in this case (or ANSI C for that matter): you can just write:

struct myStruct {
  ...
};

然后可以像使用typedef一样使用它：

and can then use it as you would a typedef:

void foo() {
   myStruct s;
}

我想，如果 testStruct 类型为 struct ，顾名思义，您可能会在它前面写上关键字 struct ！

Hi,

I think, that if testStruct is of type struct, as the name says, you shall probably write the keyword struct in front of it !

//b.h head file
#include "a.h"
struct myStruct
{
struct testStruct * m; //missing ';' before '*' 
};

希望这会有所帮助。



Best问候，

JK

Hope this helps.

Best regards,
J.K.

我建​​议按标准MS方式行驶

I would suggest going by the standard MS Way

#include "a.h"
typedef struct tagMyStruct
{

struct testStruct * m;


}ST_MYSTRUCT, *PST_MYSSTRUCT;

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