#include <stdio.h>
#include <stdlib.h>

double calcAverage(int nums[], int numNums);

int main() {
   const int MAX_GRADES = 100;
   int grades[] = {42, 18, 100, 92, 70};
   int numGrades = 5;

   for (int i = 0; i < numGrades; i++) {
      printf("i - %d   grade - %d\n", i, grades[i]);
   }

   printf("the average is %g\n", calcAverage(grades, numGrades));

   if (calcAverage(grades, numGrades) > 93)
      printf("passing\n");
   else
      printf("failing\n");
 
   printf("hello world! yeah\n");

}

double calcAverage(int nums[], int numNums) {

   int total = 0;

   for (int i = 0; i < numNums; i++) 
      total += nums[i];

   double average = total / (double)numNums;

   return average;
}