Pros and Cons of Pointers in C

Advantages of Pointer:

1) Pointers allow us to perform dynamic memory allocation and deallocation

2) Using pointer we can return more than one value from the function

3) Using pointer can pass array or string more efficiency

4) Pointer helps us to build complex data structure like linked-list, stack, tree, graphs etc.

5) Pointers permit references to functions and thereby facilitating passing of functions as arguments to other functions.

6) Use function call by reference.

4) Increase the execution speed of program. how?

Drawback of Pointer:

1) Uninitialized pointers might cause segmentation fault.

2) Dynamically allocated block needs to be freed explicitly.  Otherwise, it would lead to memory leak.

3) If pointers are updated with incorrect values, it might lead to memory corruption.

4) Pointer bugs are difficult to debug.