Open In App
Related Articles

C | Variable Declaration and Scope | Question 3

Improve Article
Save Article
Like Article

#include <stdio.h>
extern int var;
int main()
    var = 10;
    printf("%d ", var);
    return 0;

(A) Compiler Error: var is not defined
(B) 20
(C) 0

Answer: (A)

Explanation: var is only declared and not defined (no memory allocated for it)

Refer: Understanding “extern” keyword in C

Quiz of this Question

Whether you're preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, GeeksforGeeks Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we've already empowered, and we're here to do the same for you. Don't miss out - check it out now!

Last Updated : 28 Jun, 2021
Like Article
Save Article
Similar Reads