/*
 * CISC105-12 class
 * 06.06.05
 * average.c
 * Compute the average of three numbers.
 * - modified 06.13.05 to accept user input.
 * - modified 06.20.05 to use a function.
 */

#include <stdio.h>

double average( int x, int y, int z);

int main() {
  int x = 4, y = 90, z = 100;

  printf("Enter 3 numbers: ");
  scanf("%d%d%d", &x, &y, &z);

  printf("The average of %d, %d, %d = %lf\n", x, y, z, average( x, y, z ) );

  return 0;
}

/*
 * Input is three numbers.
 * Output is the average of the three numbers.
 */
double average( int x, int y, int z ) {
  int sum;
  double average;

   /* this is the sum of x, y, and z */
  sum = x + y + z;

  /* I made the divisor 3.0 to do double division instead of integer
     division.*/
  average = sum/3.0;

  return average;
}