const in function declarations

TechCrazy

What do each of these mean? Thanks. I am incredibly confused.

char foo (const char * &p );
char foo (const char &* p );
char foo (const &char * p );

char foo (const char * const &p );
char foo (const char * &const p );
char foo (const char &* const p );
char foo (const &char * const p );

char foo (const& char * const &p );
char foo (const& char * &const p );
char foo (const& char &* const p );
char foo (const& char * const p );

char foo (const char& * const &p );
char foo (const char& * &const p );

Jul 23 '05 #1

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2137

damienk

TechCrazy wrote:

What do each of these mean? Thanks. I am incredibly confused.

char foo (const char * &p );
char foo (const char &* p );
char foo (const &char * p );

char foo (const char * const &p );
char foo (const char * &const p );
char foo (const char &* const p );
char foo (const &char * const p );

char foo (const& char * const &p );
char foo (const& char * &const p );
char foo (const& char &* const p );
char foo (const& char * const p );

char foo (const char& * const &p );
char foo (const char& * &const p );

See http://www.parashift.com/c++-faq-lit...rrectness.html

Jul 23 '05 #2

TechCrazy

More:

char foo (char * const &p );
char foo (char * &const p );
char foo (char &* const p );
char foo (&char * const p );

Jul 23 '05 #3

Rolf Magnus

TechCrazy wrote:

What do each of these mean? Thanks. I am incredibly confused.

char foo (const char * &p );
The function takes a reference to a pointer to a constant character.
char foo (const char &* p );
Invalid.
char foo (const &char * p );
Invalid.
char foo (const char * const &p );
The function takes a reference to a constant pointer to a constant char.
char foo (const char * &const p );
Invalid.
char foo (const char &* const p );
Invalid.
char foo (const &char * const p );
Invalid.
char foo (const& char * const &p );
Invalid.
char foo (const& char * &const p );
Invalid.
char foo (const& char &* const p );
Invalid.
char foo (const& char * const p );
Invalid.
char foo (const char& * const &p );
Invalid.
char foo (const char& * &const p );

Invalid.

Jul 23 '05 #4

grahamo

Rule of thumb....

draw a line thru the "*", if the word "const" appears on LHS then
what's pointed to is const. If the word const appears on RHS, then
it's a constant pointer. If it appears on both sides, then both are
constants.

From Scott Meyers effective C++ book

G

What do each of these mean? Thanks. I am incredibly confused.

char foo (const char * &p );
char foo (const char &* p );
char foo (const &char * p );

char foo (const char * const &p );
char foo (const char * &const p );
char foo (const char &* const p );
char foo (const &char * const p );

char foo (const& char * const &p );
char foo (const& char * &const p );
char foo (const& char &* const p );
char foo (const& char * const p );

char foo (const char& * const &p );
char foo (const char& * &const p );

Jul 23 '05 #5

Rolf Magnus

TechCrazy wrote:

More:

char foo (char * const &p );
The function takes a reference to a constant pointer to a char.
char foo (char * &const p );
Invalid.
char foo (char &* const p );
Invalid.
char foo (&char * const p );

Invalid.

Jul 23 '05 #6

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