#include <stdio.h> 
/* Define trade_price */
double trade_price (double p, int n) {
  return p * n;
}
/* Define global arrays */
double price[3];
int number[3];
main ( ) {
  /* Wire in sample data */
  price[0] = 10.2; /* Store floating-point price in place 0 */
  price[1] = 12.0; /* Store floating-point price in place 1 */
  price[2] = 13.2; /* Store floating-point price in place 2 */
  number[0] = 600; /* Store integer number in place 0 */
  number[1] = 100; /* Store integer number in place 1 */
  number[2] = 200; /* Store integer number in place 2 */
  /* Display products */
  printf ("The trade prices are %f, %f, and %f.\n",
          trade_price (price[0], number[0]),
          trade_price (price[1], number[1]),
          trade_price (price[2], number[2]));
}