#include <stdio.h>
#include <stdlib.h>

int main()
{
    float a[7] = {1, 2.3, -5, 5.3, 6, -3, 8};
    float sum = 0;
    int i,count = 0;

    for(i = 0 ; i < 7 ; i++)
    {
        if ( a[i] > 0)
        {
            sum =+ a[i];
            count++;
        }
    }

    printf ("S = %3.2f  N = d\n", (sum/count) , count);

    return 0;
}