C宏 [英] C macro
问题描述
在我看来，我有一个有趣的问题。我有两个写一个
宏，它告诉我们传递给它的
类型的参数
即int，short，long，signed ，unsigned..etc
喜欢
typedef T unsigned int
value（T）
我必须printf（）T是什么样的价值......
问候
Gurminder
Hi,
I have an intersting quesiton in my view. I have two write a
macro which tell what is the
type of argument being passed to it
i.e int, short, long, signed , unsigned..etc
like
typedef T unsigned int
value(T)
I have to printf() what kind of value T is...
Regards
Gurminder
推荐答案
sunny说：
sunny said:
我有一个有趣的问题在我看来。
Hi,
I have an intersting quesiton in my view.
一个有趣的问题？很酷。
An interesting question? Cool.
我有两个写一个宏来告诉你传递给它的
类型的参数，即int，short，
long，signed，unsigned..etc like
typedef T unsigned int
value（T）
我必须printf（）T是什么样的价值...
I have two write a macro which tell what is the
type of argument being passed to it i.e int, short,
long, signed , unsigned..etc like
typedef T unsigned int
value(T)
I have to printf() what kind of value T is...
好的，明白了。现在，你说你有一个有趣的问题，但我不会看到一个问题。
-
Richard Heathfield
Usenet是一个奇怪的地方 - dmr 29/7/1999
http://www.cpax.org.uk
电子邮件：rjh在上面的域名（但显然放弃了www）
Okay, understood. Now, you said you had an interesting question, but I don''t
see a question.
--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999
http://www.cpax.org.uk
email: rjh at above domain (but drop the www, obviously)
晴天写道：
sunny wrote:
我认为我有一个有趣的问题。我有两个写一个
宏，它告诉我们传递给它的
类型的参数
即int，short，long，signed ，unsigned..etc
喜欢
typedef T unsigned int
value（T）
我必须printf（）T是什么样的价值...
Hi,
I have an intersting quesiton in my view. I have two write a
macro which tell what is the
type of argument being passed to it
i.e int, short, long, signed , unsigned..etc
like
typedef T unsigned int
value(T)
I have to printf() what kind of value T is...
这是一个挑战。 Straight C在编译时或运行时都没有任何类型查询
函数，所以只知道类型
不是很有帮助。
有一个相当贫瘠的sizeof（）函数，它会告诉你如何占用很多字节的b / b
，但这并不是很有用，除非你假设
只会传入类似整数的类型。即便如此，要知道T是签名还是未签名，确实有点棘手。
也许你可以更详细地复述你的问题。
That''s a bit of a challenge. Straight C doesnt have any type-inquiry
function at either compile-time or run-time, so just knowing the type
isnt of much help.
There is the rather barren sizeof() function, which will tell you how
many bytes T occupies, but that isnt very helpful, unless you assume
only integer-like types are going to be passed in. Even then it''s
going to be a bit tricky to figure out if T is signed or unsigned.
Perhaps you could retell your question, in a bit more detail.
sunny（在 11 ******************** **@75g2000cwc.googlegroups.c om ）说：
|
|在我看来，我有一个有趣的问题。我有两个
|写一个宏，告诉什么是
|传递给它的参数类型
|即int，short，long，signed，unsigned..etc
|喜欢
|
| typedef T unsigned int
|价值（T）
|
|我必须printf（）T是什么样的价值......
确实是一项有趣的任务。你的解决方案何时到期？
-
Morris Dovey
DeSoto Solar
DeSoto，爱荷华州美国
http://www.iedu.com/DeSoto
sunny (in 11**********************@75g2000cwc.googlegroups.c om) said:
| Hi,
| I have an intersting quesiton in my view. I have two
| write a macro which tell what is the
| type of argument being passed to it
| i.e int, short, long, signed , unsigned..etc
| like
|
| typedef T unsigned int
| value(T)
|
| I have to printf() what kind of value T is...
An interesting assignment indeed. When is your solution due?
--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto
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