auto
automatic storage class
It is a local variable known only to the function in which it is declared. Auto is the default storage class.
No, you have to make them static explicitly.
The default access specifier for a class is private. The default access specifier for a struct is public. It does not matter if it is a function or a variable.
Everything is an object, and "typed" based on assignation. Your variable will be given a class when you declare it to be something, and the class will depend on what value you give the variable. It is always an object though, and its class may change if you change its value.
It is the storage class, auto means automatical (or local) variable. You don't have to use it at all: inside a function it is the default, outside it is not allowed to use.
Register storage class is a compiler hint that the variable will be often used, and that it should generate code, if it can, to keep the variable's value in a register.
Automatic storage is the default storage class for all non-static local variables including formal arguments. All automatic variables are allocated on the call stack and are automatically released when they fall from scope.
The storage class specifiers in C and C++ are:autoexternmutableregisterstatictypedefA storage class specifier is used to refine the declaration of a variable, a function, and parameters
We don't. The auto storage class is the default storage class for all local variables and is therefore completely redundant in C. It exists for no other reason than that C evolved from B and inherited all its storage classes (auto, static, extern and register).
Class A default is 255.0.0.0 Class B default is 255.255.0.0 Class C default is 255.255.255.0
MyISAM was the default storage engine for MySQL 5.1 and prior versions. From MySQL 5.5 InnoDB has become the default storage engine.