This question already has answers here:
What is the difference between const int*, const int * const, and int const *?
(23 answers)
Difference between const char* p and char const* p [duplicate]
(5 answers)
Closed 8 years ago.
This might have been asked and might be a silly question, but what is the difference between these:
void f(int const& par);
void f(const int& par);
There is no difference, const is applied to the left unless it comes first, then it applies to the right.
Related
This question already has answers here:
What does `const T* const` mean?
(8 answers)
What is the difference between const int*, const int * const, and int const *?
(23 answers)
Closed 11 months ago.
I think that this means that you have a constant that has a constant address, but I am not sure what this means and want to check.
This question already has answers here:
C++ semantics of `static const` vs `const`
(2 answers)
What is the difference between static const and const?
(4 answers)
Closed 3 years ago.
Is there a difference between const int with the preceded class qualifier of const (static const int) and const int or is it the same?
If it isn´t equivalent,
Why should I explicitly make a const variable also static?
This question already has answers here:
What is the difference between char * const and const char *?
(19 answers)
Closed 4 years ago.
given variable that define as char** const var; , what is defined here as const (var or *var) ?
And in the general case, how can I know it? (namely, given it: char**** const var , what is defined here as const?)
You read right-to-left. The const refers to what is to the left. The exception is that a declaration may start with const, in which case it refers to the thing on the right.
char const * const is a constant pointer to a constant char. So char ** const is a constant pointer to a pointer-to-char.
This question already has answers here:
What is the difference between const int*, const int * const, and int const *?
(23 answers)
Closed 7 years ago.
I understand that the const keyword means that you can't change a variable's value so what does it mean if it used like this :
const char* const& message
The first const stays for the pointer reference itself cannot be changed, so you cannot do something like:
message = &something;
the second const is for the content of the pointer, so you cannot do something like:
*message = something;
This question already has answers here:
about "int const *p" and "const int *p "
(9 answers)
What is the difference between const int*, const int * const, and int const *?
(23 answers)
Closed 9 years ago.
void func1 (const int *);
void func2 (int const *);
void func3 (int * const);
Which two signatures are equivalent? If none of them are, can you please explain the subtle differences?
The first two are equivalent (the int is const), in the third it's the pointer that's const (i.e. the parameter itself).