C / C++ / MFC

manish.patel wrote:

t says that if we write x = 10; then x will be l-value(left side value)

In c++, we can not give number as variable name, It always be a string only.

So in C++, string literals are l-values.

George_George wrote:

What do you think of whether string literal is lvalue or rvalue? I think it is only rvalue, do you agree?

* ( ( char * ) & var ) = "str"[2]; // * ((char *)&var) too

int & varref = var;

varref = 1["str"]; // varref is also an lvalue

George_George wrote:

in post #2, what do the following statements mean? Especially the additional [2] after "str" and ["str"] after 1? Any ideas?

George_George wrote:

* ( ( char * ) & var ) = "str"[2]; // * ((char *)&var) too

const char * const szText = "str"; or const char szText[] = {"str"};
* ( ( char * ) & var ) = szText[2];

George_George wrote:

varref = 1["str"]; // varref is also an lvalue

struct C
{
C& operator=(int);
};

C() = 5; // OK to assign to r-value C();

Bram van Kampen wrote:

The Software I write is independent of the Microsoft Security Model. Typically all terminals installed under XP give all users administrator level control to the entire network. BTW None of the networks are connected to the Internet. Does that mean I have nothing to worry about, and that All will work as Advertised, or do I need to do something additional when I detect a Vista installation.

Bram van Kampen wrote:

I found an article by someone who appears to have clobberred the entire issue with some judicious ASM Code.
http://www.codeproject.com/KB/install/acl_common_data.aspx[^]
I tried it on my Test machine and it appears to work a dream.