Uninitialized pointers in code

Question

I am learning C++ and I came to know that pointers if left uninitialized could point to random locations in memory and create problems that memory might be used by some othe

Answer 1

int a,*ptr;

now

print(ptr,*ptr)

In the above code two cases can be possible:

1. It'll execute if default value in ptr is not the address of some used memory of program.

   Output:

          ptr             *ptr
   eg.  0x400730       -1992206795
   

2. It'll give error (segmental fault) if default address in the ptr is the address of some used memory of program. E.g. if the address of variable a in the memory is also 0x400730.