Pointer Confusion

Question

Why is this the output of this code:
https://code.sololearn.com/cgmfC4j01tb8/#cpp

Answer 1

By this a++; now a point to some uninitialized location. And giving garbage value...

Answer 2

incrementing a pointer, points to the next memory address next to &c. dereferencing it will show some garbage value as Jayakrishna🇮🇳 mentioned .
to understand better
change c to array.
int c [] ={5, 6};
int const *a = c; // do not use & (array)
and check the output.

Answer 3

int const* a in your programme is not a constant pointer, it's a pointer to constant data.
you can't change the value, but you can change the object pointer points at.

Answer 4

it's like:
const int *p: p is a pointer to int const
int *const p: p is a const pointer to int
that's the difference

Answer 5

Dimas ohhh that’s very interesting. Thanks for the info!

Answer 6

Thanks Bahha and Jayakrishna :)
And also, does changing memory address of a const pointer not cause an error?