#include <iostream.h>
#include <conio.h>

int main ()
{
int Num[100],i=0,j=0;

cout<<"Please Enter Your Num :";
do
{

 cin>>Num[i];

  if (Num[i]<0)
  {
	 cout<<"No Number!! Enter Again"<<endl;
	 i--;
  }
  if (Num[i]==0)
	  break;

 i++;
}while (1);
clrscr ();
float Sum=0;
float Average=0;
for (j=0;j<=i;j++)
{
 Sum+=Num[j];

}
Average=Sum/i;
cout<<"Average Is :"<<Average;


getch ();
return 0;
}