What Is The Difference Between Declaring A Variable And Defining A Va

1.	What Is The Difference Between Declaring A Variable And Defining A Variable?
Answer» Declaration is done to tell COMPILER the data type of the variable, and it INHERENTLY meant that somewhere in this scope, this variable is DEFINED or will be defined. And defining a variable MEANS to allocate SPACE for that variable and register it in the stack memory. For example: extern int decl1; /* this is a declaration / int def2; / this is a definition / Declaration is done to tell compiler the data type of the variable, and it inherently meant that somewhere in this scope, this variable is defined or will be defined. And defining a variable means to allocate space for that variable and register it in the stack memory. For example: extern int decl1; / this is a declaration / int def2; / this is a definition */

What Is The Difference Between Declaring A Variable And Defining A Variable?

Answer»

Declaration is done to tell COMPILER the data type of the variable, and it INHERENTLY meant that somewhere in this scope, this variable is DEFINED or will be defined. And defining a variable MEANS to allocate SPACE for that variable and register it in the stack memory. For example:
extern int decl1; /* this is a declaration */
int def2; /* this is a definition */

Declaration is done to tell compiler the data type of the variable, and it inherently meant that somewhere in this scope, this variable is defined or will be defined. And defining a variable means to allocate space for that variable and register it in the stack memory. For example:
extern int decl1; /* this is a declaration */
int def2; /* this is a definition */

Discussion

No Comment Found

Related InterviewSolutions

How Do You Use A Pointer To A Function?
What Is Size Of Void Pointer?
Write A C Program To Find Size Of Structure Without Using Sizeof Operator?
What Is The Meaning Of Prototype Of A Function?
What Is Wild Pointer In C?
What Is Dangling Pointer In C?
Write A C Program To Swap Two Variables Without Using Third Variable ?
In C, What Is The Difference Between A Static Variable And Global Variable?
Is Using Exit() The Same As Using Return?
Why Does Pascal Matter? Is There Any Benefit To Using Pascal Functions?