C++ loops

Code:

---

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{ 
    int avger=0;
    cout<<"Enter a number:\n";
    cin>> avger;
    for (int avge=0; avger >= 0 < avger; avger++){
        cout << avger <<endl;
    }
    cout << "The average is:\n" << avger <<endl;
       
    system("PAUSE");
    return EXIT_SUCCESS;
}

---

How would i make this average out all number from 0 to the number they enter like (5(1,2,3,4,5=15/5=3) how can i do this

Code:

---

        int up_to;
        int count = 0;
        cin >> up_to;


        for(int i = 1; i <= up_to; i++)
        {
                count = count + i;
        }

        cout << count/up_to;

---

thxs you saved me for honors credit