Structure Preprocessor
Storage Classes in C:-defines the scope and lifetime of the variable.
There are 4 types of storage classes in C
1)automatic:- it is defined by the auto keyword.it is the default storage class for all the local variables only used with in the functions.
2)register:-if we define variable as register then it stores in the register instead of RAM. by which accessing of that variables is much faster than normal variables.
3)Static:-default storage class for global variables.static variables used throughout the program.and the value of static variables live throughout the execution.
4)extern:-it is used to give reference of a global variable i.e. visible to all program .
variables declared outside the function known as extern variables.
Storage Classes in C:-defines the scope and lifetime of the variable.
There are 4 types of storage classes in C
- automatic
- external
- static
- register
1)automatic:- it is defined by the auto keyword.it is the default storage class for all the local variables only used with in the functions.
2)register:-if we define variable as register then it stores in the register instead of RAM. by which accessing of that variables is much faster than normal variables.
3)Static:-default storage class for global variables.static variables used throughout the program.and the value of static variables live throughout the execution.
4)extern:-it is used to give reference of a global variable i.e. visible to all program .
variables declared outside the function known as extern variables.
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