float fun(float n)
{
static float k=0;
k=k+n;
return k;
}
void main ()
int i;
float n,aver,sum=0;
printf("input your number \n");
for(i=0;i<8;i++)
scanf("%f",&n);
sum=fun(n);
aver = sum/8;
printf("%f,%f",sum,aver);