discussion 3

#include "stdio.h"

/**
 * The purpose of this program is to create two integer variables and assign
 * each a value. Then the values are passed to a function that alter their 
 * values without needint to reference a global variable or returning any
 * values.
 *
 * @author Chris Neitzer
 * Discussion Forum 3
 */

/* Prototype for myFunc */
void myFunc(float *argument_one, float *argument_two);

int main()
{
  /* Assign integer values to two variables of type integer */
  float var_1 = 3.14, var_2 = 6.28;

  /* Print out the initial values of the variables */
  printf("The value of var_1 was %4.2f and var_2 was %4.2f, ", var_1, var_2);

  /* Pass the reference, or pointer, to the two previously declared integer
   * variables. */
  myFunc(&var_1, &var_2);

  /* Now, print out the altered values of the two variables declared at the
   * beginning of the main function. */
  printf("but now var_1 is %4.2f and var_2 is %4.2f!\n", var_1, var_2);

  fflush(stdin); /* clear input area so you can pause */
  printf("Press the key to exit program.");
  getchar(); /* force the computer to pause until you press a key on the keyboard */
  return 0;
}

/**
 * myFunc accepts two integer pointers as arguments and assigns new values to
 * them.
 */
void myFunc(float *argument_one, float *argument_two)
{
  *argument_one = 41.3;
  *argument_two = 82.6;
}