Programme for search maximum number using pointer

//Programme for search maximum number using pointer
#include<iostream>
using namespace std;
int main()
{
int n;
cout<<"enter how many no. you want to eneter\n";
cin>>n;
cout<<"enter "<<n<<" no.\n";

int a[n],b=0,*p,*q;
p=a;
q=&b;

for(int i=0;i<n;i++)
{
cin>>*(p+i);
if(*(p+i)>*q)
*q=*(p+i);
}
cout<<"maximum no. is "<<*q;
}