What are C++ storage classes? - auto register static extern auto: the default. Variables are automatically created and initialized when they are defined and are destroyed at the end of the block containing their definition. They are not visible outside that block register: a type of auto variable. a suggestion to the compiler to use a CPU register for performance static: a variable that is known only in the function that contains its definition but is never destroyed and retains its value between calls to that function. It exists from the time the program begins execution extern: a static variable whose definition and placement is determined when all object and library modules are combined (linked) to form the executable code file. It can be visible outside the file where it is defined.

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Question:
What are C++ storage classes?

Answer:
auto
register
static
extern
auto: the default. Variables are automatically created and initialized when they are defined
and are destroyed at the end of the block containing their definition. They are not visible
outside that block
register: a type of auto variable. a suggestion to the compiler to use a CPU register for
performance
static: a variable that is known only in the function that contains its definition but is
never destroyed and retains its value between calls to that function. It exists from the
time the program begins execution
extern: a static variable whose definition and placement is determined when all object and
library modules are combined (linked) to form the executable code file. It can be visible
outside the file where it is defined.

Category	C++ Interview Questions & Answers - Exam Mode / Learning Mode
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Question:
What are C++ storage classes?

Answer:

auto
register
static
extern
auto: the default. Variables are automatically created and initialized when they are defined
and are destroyed at the end of the block containing their definition. They are not visible
outside that block
register: a type of auto variable. a suggestion to the compiler to use a CPU register for
performance
static: a variable that is known only in the function that contains its definition but is
never destroyed and retains its value between calls to that function. It exists from the
time the program begins execution
extern: a static variable whose definition and placement is determined when all object and
library modules are combined (linked) to form the executable code file. It can be visible
outside the file where it is defined. Source: CoolInterview.com

Automatic, Static and Allocated. Source: CoolInterview.com

Answered by: nisha | Date: 8/1/2010 |

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