#include

void main()

{

extern int a;

printf(“n a = %d”, a);

}

int a = 20;

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

A. Extern int a is declaration, int a = 20 is the definition

B.  Int a = 20 is declaration, extern int a is the definition

C. Int a = 20 is definition, a is not defined

D. a is declared, a is not defined

Hướng dẫn

Chọn A là đáp án đúng