Declarations and Initializations - C Programming Questions and Answers

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In the following program where is the variable a getting defined and where it is getting declared?

 #include
 int main() 
 {
     extern int a;    
     printf("%d\n", a);   
     return 0;
  } 
  int a=20;

extern int a is declaration, int a = 20 is the definition

int a = 20 is declaration, extern int a is the definition

int a = 20 is definition, a is not defined

a is declared, a is not defined

Answer : Option A

Explanation :

- During declaration we tell the datatype of the Variable.

- During definition the value is initialized.

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