/*
*   File Name   :   free_fall_d_vs_time.c
*	Title       :   Free-fall distance vs. time 
*	Author      :   Buff Furman
*	Created     :   12SEP2009
*	Revised     :   12SEP2009
*	Version     :   1.0
*	Description :   Calculates the distance vs. time of a free-falling mass
*	Inputs	    :   none
*	Outputs	    :   time in seconds, distance in meters
*	Method	    :   Declare and initialize variables
*				    While time <= 10
*				        calculate d
                        print time and distance
                        increment time
*				    End 
                  

*	Revision History:
*	Date		Who			Description of Change
*	-------		---------	---------------------------
*   17SEP2012   BF          Modified printf() formatting
*	12SEP2009	BF			Created program

*/

/*---------Include Files--------------*/

#include <stdio.h>			/* standard IO library routines, like printf, scanf */

/*---------Macros---------------------*/

#define G 9.81  /* standard gravitational constant, m/s^2 */
//float g = 9.81; /* alternative approach using a variable */

/*---------Function Prototypes--------*/

                            /* none in this program */


/*---------Global Variables-----------*/

                            /* none in this program */
					

/*---------Body of Program Code-------*/

int main(void)
{

    /* Declare variables */    
    float t;        /* time variable */
    double d;		/* distance in meters */

    /* Initialize variables */
    t = 0.0;
    d = 0.0;
    
    /* Print header row for time and distance */
    printf("time, sec  distance, m\n"
           "---------  -----------\n");
    
    /* Loop to calculate and print time and distance */
    while( t <= 10.01)
    {                   /* Note curly brace for compound statement */
        d = 0.5*G*t*t;
        printf("%9.1f  %6.2f\n", t, d);
        t = t + 0.1;
    }
    
    /* Finish */
    	
return 0;		
}


/*---------Function Definitions-------*/

                            /* none in this program */