#include
using namespace std;
int main()
{
int a=5;
int *p=&a;
int **q=&p;
cout<<**q<<" “<<*q<<” “<<q<<” "<<&p;
return 0;
}
if I run this code,shouldn’t the value of *q and &p be the same.If not then what should be the value of *q and why?
Double and single pointer concept
Hey @armaanbhardwaj23, I have made a diagrammatic explanation for you. It will help you in understanding your question better 
1 Like
Thanks a lot for this.Although I’m aware of this concept,I was just trying to implement something different:
I’ve taken a variable a whose value is 5,created a pointer p using address of a and then created a double pointer q with address of p.So I just wanted to know what should be the value of *q.
Should it be a garbage value or what and how do we exactly find this value. I know that
q=&p and **q=a,then basically what should be *q?
See , *q will be value of address of variable q I.e., 30 in diagram and your doubt for &p is that it will show address of p variable I.e., 20 in diagram
This might help
Yes, when did I say that they both will have same value? *q and &q both will have different value @armaanbhardwaj23
I thought according to this *q should be equal to &q.
That’s fine @armaanbhardwaj23, if you still want to know deep about pointer, reference , address, memory allocation. I can give you a reference video to
I mean sure yeah!
But like I was randomly checking what should be the value of *q so can you predict and tell me what’s the output of cout<<*q in the program I wrote.
Hey @armaanbhardwaj23 see this carefully
Whereas for video, you can have a look here https://youtu.be/DJ-o7hDAG7E
Happy to help
1 Like
okay I got it…Thank you so much
1 Like