//=========================================================================
#define PROGRAMMER "BAHN, William"
#define PROG_CODE  "bahw"
#define COURSE     "ECE-1021"
#define YEAR       (2003)
#define TERM       "Fall"
#define SECTION    (0)
#define ASSIGNMENT "RWA 2.2"
#define REVISION   (0)
#define TITLE      "Real World Application from Section 2.2"
#define SUBTITLE   "Computing Distances"
#define EMAIL      "wbahn@eas.uccs.edu"
#define FILENAME   "rwa0202.c"
//=========================================================================

// PROBLEM:
//
// Assuming a constant rate of speed, compute the total distance traveled
// given the total time elapsed. Repeatedly ask the user for times until
// the user enters a time that is zero or less.

// The time is to be entered in integer hours.

// PSEUDOCODE
// 1) GET: The first elapsed time from the user.
// 2) LOOP: While the time is greater than zero.
// 2.1) SET: distance = rate * time (rate = 14 km/hr)
// 2.2) PUT: The distance to the screen
// 2.3) GET: The total elapsed time from the user.
// 3) PUT: Program Termination Message to screen.

//== INCLUDE FILES ========================================================
#include <stdio.h> // printf()

//== FUNCTION PROTOTYPES ==================================================
void PrintHeader(void);

//== MAIN FUNCTION ========================================================
int main(void)
{
	int distance, rate, time;

	PrintHeader();
	printf("\n"); // Print a blank line

	rate = 14; // Rate in km/hr

	printf("Enter a time of zero or less to quit.\n");
	printf("Enter the first time (in whole hours): ");
	scanf("%i", &time);

	while(0 < time)
	{
		distance = rate * time; // distance in km
		printf("In %i hrs at %i km/hr the distance traveled is %i km.\n",
			time, rate, distance);
		printf("\n"); // Print a blank line
		printf("Enter the next time (in whole hours): ");
		scanf("%i", &time);
	}

	printf("PROGRAM TERMINATED BY USER\n");
	return(0);
}

//== SUPPORT FUNCTIONS ====================================================
void PrintHeader(void)
{
	printf("========================================"
			 "=======================================\n");
	printf("Course....... %s-%i (%s %i)\n", COURSE, SECTION, TERM, YEAR);
	printf("Programmer... %s (%s)\n", PROGRAMMER, PROG_CODE);
	printf("Assignment... %s (Rev %i) (Source Code in %s)\n",
		ASSIGNMENT, REVISION, FILENAME);
	printf("Description.. %s\n", TITLE);
	printf("              %s\n", SUBTITLE);
	printf("========================================"
			 "=======================================\n");

	return;
}