Sumame los 100 primeros numeros y hacer la media

#include <iostream>
using namespace std;

int main()
{
    int i, sum = 0, avg;
    for(i = 1; i <= 100; i++){
        sum = sum + i;
    }
    avg = sum / 100;
    cout<<"Sum of first 100 natural number is "<<sum;
    cout<<"\nAverage is "<<avg;
    return 0;
}