Learning immediately: https://edu.csdn.net/course/play/474/5137?utm_source=blogtoedu
Often pointer:
Class name * const variable name
Often the parameter as a function pointer, the pointer value of the object is not allowed to change a variable in the execution of the function
Pointing a pointer variable often variable definitions:
const variable name class name *
Often only variable points to a pointer to point to constant argument
Often pointing object is the object pointer can point to, but can not change the value of the object is (as is often the object that is defined to point to a default value can not be changed referent
Often defined point object pointer variable:
const variable name class name * / const variable names class names
Often an object pointer pointing to the most commonly used form of function parameters
For the often quoted:
If you do not want to modify the value of the argument in the function, the parameter may be declared as often quoted
