C ++ Learning

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Modify the constant pointer const

I personally think it is the final keyword in Java. After variables and methods are defined, the variable value cannot be changed.

The function of c o n s t is not limited to replacing # d e f I n e s in a constant expression. That is, it can replace # d e f I n e s to define variables.

The rules are as follows:

Const int * A; // The object indicated by const. A is variable, and A is variable.
Int const * A; // const modifies the object to which a points. A is variable, and A is variable.
Int * const A; // const modifier pointer A, A is immutable, and a points to the object is variable
Const int * const A; // The objects pointed to by pointers A and A are not changeable.