int transport::trip::trip_to_string(char * buffer, int buffer_length) {
// If join fails
int err;
// The start and end of the location
const int str_length = 500;
// Start location
char start_str[str_length];
start.location_to_string(start_str, str_length);
char * start_str_ptr = start_str;
// End location
char end_str[str_length];
end.location_to_string(end_str, str_length);
char * end_str_ptr = end_str;
// Speed
char speed_str[MACRO_NUM_TO_STR];
sprintf(speed_str, "%f", speed());
char * speed_str_ptr = speed_str;
// Distance in miles
char distance_in_miles_str[MACRO_NUM_TO_STR];
sprintf(distance_in_miles_str, "%f", distance_in_miles());
char * distance_in_miles_str_ptr = distance_in_miles_str;
// Time
char time_str[MACRO_NUM_TO_STR];
sprintf(time_str, "%f", time(speed()));
char * time_str_ptr = time_str;
// The data we want to join
char ** data[] = {&start_str_ptr, &end_str_ptr, &speed_str_ptr,
&distance_in_miles_str_ptr, &time_str_ptr, NULL};
// Join the data together
err = strings::join(buffer, data, TRANSPORT_TRIP_DELIM, TRANSPORT_TRIP_DONT_HAVE, buffer_length);
// Success is determined by join
return err;
}
int transport::trip::trip_to_string_readable(char * buffer, int buffer_length) {
const int str_length = 500;
char start_str[str_length];
char end_str[str_length];
start.location_to_string(start_str, str_length);
end.location_to_string(end_str, str_length);
sprintf(buffer, "Traveling at %02f mph "
"over a distance of %02f miles "
"will take %02f minutes.\n"
"Starting at %s.\n"
"Ending at %s.\n",
speed(),
distance_in_miles(),
time(speed()),
start_str,
end_str
);
return EXIT_SUCCESS;
}
float Calc::distance_in_meter(float lat1, float lon1, float lat2, float lon2)
{
return ( distance_in_miles(lat1,lon1,lat2,lon2) * MILES_PER_M );
}
float transport::trip::time(float speed) {
return distance_in_miles() / speed * MACRO_HOURS_TO_MINUTES;
}
