int main(int argc, char **argv){ 

 /* variable declaration */
int counter = 0;
double value = 0.0;
double total = 0.0;
double average = 0.0;

while (counter <= 10){
  printf("please enter value %d: ", counter);
  scanf("%lf", &value);
  total += value;

  printf("please enter otherthing %d: ", counter);
  scanf("%lf", &value);
  //do your thing here

  counter++;
} /* test */