#include <stdio.h>
float hesap (float);
int main ()
{ float p;
float avg =hesap(p);

printf ("%f is avg",avg);


return 0;
}


float hesap(float p)
{
	float  sum =0, c=0;
	int x;
do{
	printf ("enter a value");
	scanf ("%d",&x);

	if (x>0)
	{sum+=x;
	c++;
	}
	p=sum/c;
}
while (x!=0);

return p;
}