Output question

Question

C++

#include <iostream>
using namespace std;
int main()
{
int mas[9]={2,6,3,9,1,0,5,8,4};
int *p=new int[9];
for(int i=0;i<9;i++){
p[i]=mas[i];
}
int n1=sizeof(mas)/sizeof(*mas);
int n2=sizeof(p)/sizeof(*p);
cout << n1 <<n2;
return 0;

The answer is 92 . But I have doubt in n2 how it is 2 the sizeof(*p) is 4 so for being answer 2 , sizeof(p) should be 8. If possible then please explain me .

Answer 1

I hope you understand the silliness of the line

int *p=new int[9];

and why you get a warning there.

If you divide 8/4, the answer is 2. Are you expecting a different answer?

Answer 2

Martin Taylor excellent answer!

I was thinking the declaration was "silly" because it had unintended consequences in the calculations using sizeof. I had in mind the warning would be eliminated with a compile-time allocation, int p[9];, but your solution fits most flexibly with possible original intents of the author. Kudos!