全局结构声明 [英] global struct declarations
问题描述
如果一个结构或其成员被传递给一个函数，那么它是否必须全局声明？
#include< stdio.h> < br $>
struct mystruct {
int a;
int b;
};
int structfunc（struct mystruct foo）;
int main（void）
{
struct mystruct bar;
bar.a = 123;
bar.b = 456;
int sum = structfunc（bar）;
printf（ "％d \ nn"，sum）;
返回0;
}
int structfunc （struct mystruct foo）
{
int sum = foo.a + foo.b;
返还金额;
}
如果在main（）中移动struct
声明，则此代码无法编译。
" Frane Roje" < frane.roje（d * elete *）@ st.hinet.hr>写在
新闻：bt ********** @ ls219.htnet.hr：
我从未见过声明在函数内部的结构。
我一直这样做。如果我需要在函数中打包一些常见的数据集
来使我更清楚。为什么我应该在函数外面公开
结构声明？
我相信它不常见，没有理由为什么有人在里面声明它一个
功能。
是的，对其他功能没用。
看看你的热门帖子破坏了主题？
-
- 马克 - >
-
" Frane Roje" < frane.roje（d * elete *）@ st.hinet.hr>在消息中写道
news：bt ********** @ ls219.htnet.hr ...好吧，我们都在这里学习，我很高兴我说出了我所说的''因为我现在知道更多了！
我使用VC7，我在main（）中编写了一个带有struct的代码，它>没有
出现在课堂视图中，是否出现在你的编辑器中？如果我声明一个全局
结构，我确实在类视图中显示。
我忘了提到它确实编译并使用了一个结构内部
功能
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完成任务的时间！
删除（d * elete *）回复
< blockquote>还有一件事
int sum = structfunc（bar）;
这段代码是C ++也许这就是为什么代码赢了'编译
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删除（d * elete *）回复
If a struct or its members are passed
to a function, must it be declared globally?
#include <stdio.h>
struct mystruct{
int a;
int b;
};
int structfunc(struct mystruct foo);
int main(void)
{
struct mystruct bar;
bar.a = 123;
bar.b = 456;
int sum = structfunc(bar);
printf("%d\n", sum);
return 0;
}
int structfunc(struct mystruct foo)
{
int sum = foo.a + foo.b;
return sum;
}
This code doesn''t compile if the struct
declaration is moved inside main().
"Frane Roje" <frane.roje(d*elete*)@st.hinet.hr> wrote in
news:bt**********@ls219.htnet.hr:
I''ve never seen a declaration of struct inside a function.
I do it all the time. If I need to package up some common set of data
inside a function to make it more clear I do. Why should I expose the
struct declaration outside the function?
I believe it''s
not common and there is no reason why should anyone declare it inside a
function.
Yes there is, it is no use to other functions.
See how your top posting destroyed the thread?
--
- Mark ->
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"Frane Roje" <frane.roje(d*elete*)@st.hinet.hr> wrote in message
news:bt**********@ls219.htnet.hr...Well we''re all here to learn, I''m glad I said what I said ''cause now I know more!
I use VC7 and i wrote a code with a struct inside main() and it >did not show up in the class view, does it appear in your editor? If I declare a global
struct i does show in the class view.
I forgot to mention that it does complie and work with a struct inside
function
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Time to get it done!
Remove (d*elete*) to reply
And 1 more thing
int sum = structfunc(bar);
This code is C++ maybe that is why the code won''t compile
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Time to get it done!
Remove (d*elete*) to reply
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