syntax - Difference between const declarations in C++

Question

What is the difference between

void func(const Class *myClass)

and

void func(Class *const myClass)

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See also:

• C++ const question
• How many and which are the uses of "const" in C++?

and probably others...

Answer 1

The difference is that for

void func(const Class *myClass)

You point to a class that you cannot change because it is const. But you can modify the myClass pointer (let it point to another class; this don't have any side effects to the caller because it's pointer is copied, it only changes your local the pointer copy) In contrast

void func(Class *const myClass)

Now myClass points to a class that can be modified while you cannot change the parameter.