Array Maximum Minimum Sum Average

Array Maximum Minimum Sum Average:

#include <iostream>
#include<stdlib.h>
using namespace std;

int main()
{
    int size, range;
    cout<<"Enter size: ";
    cin>>size;
    cout<<"Enter range: ";
    cin>>range;
    int *pointer, i;
    pointer = new int[size];
    for(i=0; i<size; i++)
    {
        pointer[i] = rand()%range;
        cout<<pointer[i]<<" ";
    }
    int max = pointer[0];

    for(i=0; i<size; i++)
    {
        if(pointer[i]>max)
        {
            max = pointer[i];
        }
    }
    cout<<endl<<"Maximum: "<<max;
    int min = pointer[0];
    for(i=size-1; i>0; i--)
    {
        if(pointer[i]<min)
        {
            min = pointer[i];
        }
    }
    cout<<endl<<"Minimum: "<<min;
    int sum = pointer[0];
    sum=0;
    for(i=0; i<size; i++)
    {
        sum+= pointer[i];
    }
    cout<<endl<<"Sum: "<<sum;
    float average = pointer[0];
    sum=0;
    for(i=0; i<size; i++)
    {
        sum+=pointer[i];
        pointer[i]/size;
    }
    cout<<endl<<"Average: "<<average;
    return 0;
}