String and pointer in C++

Question

Below is the code for which I want to know the answer to 2 questions in the side comment. Please help me

#include<iostream>

using namespace std;

int main()
{
    char *p="Hello";
    cout <<*p;     //gives H
    cout <<*(p++); //also gives H.Why?
    cout <<*(p++); //gives e.
    cout <<*(p++); //gives l.
    cout <<*(p++); //gives l.
    cout <<*(p++); //gives o.
    cout <<*(p++); //gives no output.Why? It should give some garbage value!
}

Answer 1

*(p++) gives 'h' because you first ask the value and than increment the position of your pointer and it the same thing in the last line.