Unexpected output C++

I started learning Cpp after Python, so some results are not really obvious for me.

I have this code:

#include <iostream>

using namespace std;

int main()
{
    int a = 10;
    int *b = &a;
    b += 1;
    cout<<b;

    return 0;
}

And it returns different value every time, for example 0x7fff0dabe070.

I know this 0x means hexadecimal number, but why doesn’t it just return 11 or at least the same number every time?

>Solution :

To get the expected result you should write

int a = 10;
int *b = &a;
*b += 1;
cout<<*b;

Othewise in this statement

b += 1;

there is used the pointer ardithmetic and in this statement

cout<<b;

there is outputed the address of the memory just after the object a stored in the pointer after the pointer arithmetic

To get a value of an object pointed to by a pointer you need to dereference the pointer.