Declaration error

What do I do wrong?

class CTest
{
public:
CTest(int uu);
};

void ttt()
{
int uu=88;
CTest(uu);
CTest(88);
}


I get 2 errors that I do not understand on CTest(uu) with MSVC6 :
error C2371: 'uu' : redefinition; different basic types
error C2512: 'CTest' : no appropriate default constructor available

I have a way CTest((int) uu); to get it working, but I would like to
understand where is the problem...

Thank you in advance

Pierre Couderc

re: Declaration error

Hi,
You forgot the names of the variables.
This one should work.

Bernhard 'berber' Berger

re: Declaration error

Pierre Couderc wrote:
In
CText(uu);

the parens are superfluous. It means the same as

CText uu;

so in your first line in main, you define an int named uu, and in the next
line, a definition of a default-contructed CText with the same name
follows.

re: Declaration error

Pierre Couderc wrote:You forgot the object name, and the compiler thinks you're declaring a
CTest object by the name of uu, but there is already an int by that
name in the current scope. Try:

CTest c( uu ); // Works fine

This problem is similar to the one described in this FAQ:

http://parashift.com/c++-faq-lite/ctors.html#faq-10.19

Cheers! --M

re: Declaration error

Bernhard Berger wrote:Just to suggest something on posting practices: NEVER correct
the posting to which you respond by changing the text which you
quote. ALWAYS place your corrections after the text which you
are correcting. Do it like this:

[original text, which you quote:][your correction:]
CTest foo(uu);
CTest bar(88);

Otherwise it seems that the original poster (whose message you
quoted) did everything right in the first place.

V
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re: Declaration error

Pierre Couderc a écrit :My (bad)idea was that it was not necessary to declare an explicit name
as the constructor of CTest makes all the work....


Thank you all.
Pierre Couderc

re: Declaration error

Pierre Couderc wrote:To overcome the "what looks like a declaration is a declaration" issue
in your code, surround the type with parens, not the value:

(CTest)uu;

It stops being a declaration and achieves the same point: constructing
a temporary of type CTest from 'uu'. The compiler can still optimize it
away, though. You should consider a simple stand-alone function.

V
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