[زهرة البنفسج]

void main()
    {
     float n,sum,avg;
     int i=1;
     while(i)
       {
         cout<<"Enter A value : ";
         cin>>n;
         if (n<0)
           {
           cout<<"No data entry";
           break;
           }
         else {
               sum+=n;
               i++;
              }

       }
         i-=1;
         cout<<"there were "<<i<<"numbers";
         avg=sum/i;
         cout<<"\nAverage was :"<<avg;
         getch();
    }