Guys plz explain the ++ prefix and ++postfix to me in c++

Answer 1

int a = 2;
cout<<++a;

output will be 3 because it increments it first then it prints it

Answer 2

int a = 2;
cout<<a++;

output will be 2 because first it prints the value of a then it increments it

Answer 3

to see that it incremented do this :

int a = 2;
cout<<a++<<" "<<a;

output is: 2 3

Answer 4

So it will print only 2,
Where can i get the value after the increment is done?