What is dangling pointer in c?

If any pointer is pointing the memory address of any variable but after some variable has deleted from that memory location while a pointer is still pointing such memory location. Such a pointer is known as a dangling pointer and this problem is known as the dangling pointer problem.

    

      Example:

      

      Output:

     Segmentation fault (core dumped)

     Explanation:

     Variable x is a local variable. Its scope and lifetime is within the function call hence after returning address of x variable x became dead and the pointer is still pointing ptr is still pointing to that location

    In other words, we can say a pointer whose pointing object has been deleted is called a dangling pointer.

     The solution to this problem: Make the variable x is as a static variable.