Electronics Firmware Engineer - Interview Questions - 8

160. What is Wild pointer?

161. What will be output of following c program?

void main()

{

int *ptr;

printf("%u\n",ptr);

printf("%d",*ptr);

}

162. What is meaning of NULL?

163. What will be output of following c program?

#include "string.h"

void main()

{

char *str=NULL;

strcpy(str,"c-testing");

printf("%s",str);

}

164. What is Generic pointer?

165. What is the output?

#include "string.h"

void main()

{

void *ptr;

printf("%d",sizeof(ptr));

}

166. What is the output?

void main()

{

char c='A';

int i=4;

void *p;

char *q=&c;

int *r=&i;

p=q;

printf("%c",*(char *)p);

p=r;

printf("%d",*(int *)p);

}

167. What is a memory Leak?

168. What is difference between #define and const?

169. Memory representation of float data type in c.

170. What is lvalue and rvalue?

171. What is Storage class in c?

172. What is Scope of a variable in c?