Page 16 - Sample_test_Float

16 Functions and Pointers

5.2.13. Wild Pointer
A pointer in c which has not been initialized is known as wild pointer.

Example
What will be output of following c program?
#include<stdio.h>
void main()
{
int *p;
printf(“%u\n”,p);
}

Output
28618

Here the output is just any random address (Garbage value)

Here p is wild pointer because it has not been initialized. Wild pointer doesn’t point any specific memory
location.

5.2.14. Dangling Pointer
If a pointer is pointing to the memory address of a variable and after sometimes, if the variable has been deleted
from that memory location, then the pointer will still be pointing to the same memory location. Such pointer is
known as dangling pointer and this problem is known as dangling pointer problem.
Initially:

ptr a

5000 25

8000 5000

Later:

ptr a

5000 25

8000 5000