Electronics Firmware Engineer - Interview Questions - 10

182. What is extern keyword in c

183. What is the output

#include <stdio.h>

extern int i;

int i=10;   //Initialization statement

i=25;       //Assignment statement

int main()

{

    printf("%d",i);

    return 0;

}

184. What is the size of void pointer in c?

185. Is static variable can be defined in header file and can be used by many c files

186. What will be the address printed if the address is procured from the function.

187. What is purpose to declare register variable.

188. How to define Global variable, used in more than 2 c-files.

189. How to find a loop in linked list

190. Different types of file inclusion in C

191. What is the use of #pragma in C

192. Differentiate pass by value and pass by reference.