正确的Typedef [英] Correct Typedef
问题描述
下面的代码有什么问题，
我编译prog时得到2错误...是什么意思？
错误C2275：结构：非法使用此类型作为表达式
错误C2065：str：未声明的标识符
typedef struct
{
char文件;
int a;
int b;
int c;
}结构;
int func（结构* Ob，
char * fileName）;
int main（int argc，char ** argv）
{
int error;
structure * str;
error = func（& str， " abc.txt"）;
返回错误;
}
谢谢
Priya
What is wrong in the below code,
I get the 2 error when i compile the prog... what is mean ??
error C2275: structure: illegal use of this type as an expression
error C2065: str: undeclared identifier
typedef struct
{
char file;
int a;
int b;
int c;
} structure;
int func(structure *Ob,
char *fileName);
int main(int argc, char **argv )
{
int error;
structure *str;
error = func(&str, "abc.txt");
return error;
}
Thanks
Priya
推荐答案
Priya Mishra写道：
Priya Mishra wrote:
以下代码有什么问题，
我当我编译prog时得到2错误...是什么意思??
错误C2275：结构：非法使用此类型作为表达式
er ror C2065：str：未声明的标识符
这是否意味着您使用的是VC ++？请使用C编译器，好吗？
#include< stdio.h>
typedef struct
{char文件;
int a;
int b;
int c ;
}结构;
一个没有标签的结构，并且在C编译器上可以使用typedef''ing。
int func（结构* Ob，
char * fileName）;
int main（int argc，char ** argv）
不需要argc& argv如果你不打算使用它们，那么
int main（void）有效。 {
int error;
structure * str;
恕我直言，你试图检索一些信息
关于某个文件（假设函数声明是理智的。）
你肯定需要在这里分配一些内存吗？ br />
或者，至少是一个有效的指针。
错误= func（& str，" abc.txt"）;
错误：func将指针指向struct，str，是指向
struct的指针。
返回错误;
}
What is wrong in the below code,
I get the 2 error when i compile the prog... what is mean ??
error C2275: structure: illegal use of this type as an expression
error C2065: str: undeclared identifier Does that mean you are using VC++? Use a C compiler, will you, please? #include <stdio.h>
typedef struct
{
char file;
int a;
int b;
int c;
} structure; A struct without a tag, and typedef''ing is okay on C compilers.
int func(structure *Ob,
char *fileName);
int main(int argc, char **argv ) Don''t need the argc & argv if you are not going to use them, so
int main(void) works. {
int error;
structure *str; IMHO, you are trying to retrieve some information
about some file (assuming the function declaration is sane.)
Surely you need some memory allocated here?
Or, atleast a valid pointer.
error = func(&str, "abc.txt"); err: func takes pointer to struct, str, is a pointer to pointer to
struct.
return error;
}
Priya Mishra写道：
Priya Mishra wrote:
以下代码有什么问题，当我编译prog时我得到2错误...是什么意思??
错误C2275：结构：非法使用此类型作为表达式
错误C2065 ：str：未声明的标识符
What is wrong in the below code,
I get the 2 error when i compile the prog... what is mean ??
error C2275: structure: illegal use of this type as an expression
error C2065: str: undeclared identifier
FYI：
复制粘贴MSVC ++中的代码6
我没有得到这样的错误，我得到的是其他一些错误，
在你向func传递错误的参数时。所以也许你可以解释
a更多关于这是否是你试过的唯一一段代码
编译或不...
[snip ]
FYI:
On copy-pasting the code in MSVC++ 6
I did not get such an error, what I got was some other error,
in your passing a wrong argument to func. So maybe you can explain
a bit more about whether this is the only piece of code you tried
compiling or not...
[snip]
Priya Mishra写道：
Priya Mishra wrote:
下面有什么问题代码，
当我编译prog时我得到2错误...是什么意思??
错误C2275：结构：非法使用此类型作为表达式
错误C2065：str：未声明的标识符
typedef struct
{char文件;
int a;
int b;
int c;
}结构;
int func（结构* Ob，
char * fileName）;
int main（int argc，char * * argv）
int error;
structure * str;
error = func（& str，" abc.txt"） ;
返回错误;
}
谢谢
Priya
What is wrong in the below code,
I get the 2 error when i compile the prog... what is mean ??
error C2275: structure: illegal use of this type as an expression
error C2065: str: undeclared identifier
typedef struct
{
char file;
int a;
int b;
int c;
} structure;
int func(structure *Ob,
char *fileName);
int main(int argc, char **argv )
{
int error;
structure *str;
error = func(&str, "abc.txt");
return error;
}
Thanks
Priya
如果我是没错，有另一个线程完全相同
的内容，
海报的名字等等.netnet不是速溶咖啡，给它一些时间
重新创建
a线程。您的线程可能会丢失，但这是一个罕见的。我已经
回复了另一个，找到相同内容确实令人恼火
elsethread。
If I am not too wrong, there was another thread with the exact same
content,
poster''s name etc. Usenet is not instant coffee, give it some time
before recreating
a thread. It is possible that your thread gets lost, but that is a
rarety. I have already
replied to the other, and it is indeed irritating to find same content
elsethread.
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