#include <iostream>  
#include <cstdlib>
using namespace std;
int main(int argc, char *argv[])
{  int num, n_neg=0, min=0, pos, n75=0, sum75=0;
   double ave75;
   do {
   cout<<"Give a num <=0 ?"; 
   cin>>num;
   } while (num>0);
   while (num != 0) {
    n_neg++;
    if (min>num) 
    { min=num; pos=n_neg;
    }
    if (num%7==0 && num%5!=0) 
    { n75++; sum75 +=num;
    }
    do {
    cout<<"Give a num <=0 ?"; 
    cin>>num;
    } while (num>0);
   }
   if (n_neg>0) {
     if (n75>0) {
       ave75=(double) sum75/n75;
       cout<<"Average of neg with 7,5 prop. is "<<ave75<<endl;}
     else cout<<"NO number with 7,5 prop. given"<<endl; 
     cout<<"Min neg is "<<min<<" at pos "<<pos<<endl;}
   else cout<<"No neg numbers given"<<endl;
   system("PAUSE");
   return 0;
}