A dangling pointer is a pointer that no longer points to valid data after memory deallocation. For example, when memory is allocated to a pointer and then deallocated using free(), the pointer becomes a dangling pointer. This can lead to undefined behavior if accessed afterwards.

1. What is the dangling pointer? Explain with a proper example.
Solution
A dangling pointer is a pointer which nce pointed to some data, but because of memory
deallocation, points to an invalid or null data.
Example:
Suppose we declare and allocate some memory to a pointer:
char *temp = malloc(some_size);
Then we de-allocate the memory allocated to the pointer temp by,
free (temp);
After execution of the above statement, temp becomes a dangling pointer.