C programming

int calculateSum(int arr[], int size) { int i, sum = 0; for (i = 0; i < NUM_OF_ELEMENTS; i++) { sum += arr[i]; } return sum; }

Call the function calculateAverage() to calculate and return the average of all the elements in the array as a float. calculateAverage() will call calculateSum() to aid in calculating the average (calculated sum / NUM_OF_ELEMENTS). Output the returned average in main() with 2 places of precision (2 places to the right of the decimal point [%.2f]).

float calculateAverage(int arr[], int size)