/************************************************************************
*                                                                       *    
*  Copyright Digital Equipment Corporation 1998. All rights reserved.   *
*                                                                       *    
*  Restricted Rights: Use, duplication, or disclosure by the U.S.       *    
*  Government is subject to restrictions as set forth in subparagraph   *    
*  (c) (1) (ii) of DFARS 252.227-7013, or in FAR 52.227-19, or in FAR   *    
*  52.227-14 Alt. III, as applicable.                                   *    
*                                                                       *    
*  This software is proprietary to and embodies the confidential        *    
*  technology of Digital Equipment Corporation. Possession, use, or     *    
*  copying of this software and media is authorized only pursuant to a  *    
*  valid written license from Digital or an authorized sublicensor.     *    
*                                                                       *    
************************************************************************/

/*      chap_3_charconv.c       */

/* This program uses the ecvt function to convert a double      */
/* value to a string. The program then prints the string.       */

#include <stdio.h>
#include <stdlib.h>
#include <unixlib.h>
#include <string.h>

main()
{

    double val;         /*  Value to be converted   */

    int sign,           /* Variables for sign   */
        point;          /* and decimal place    */

    /*  Array for the converted string  */
    static char string[20];

    val = -3.1297830e-10;

    printf("original value: %e\n", val);
    strcpy(string, ecvt(val, 5, &point, &sign));
    printf("converted string: %s\n", string);
    if (sign)
        printf("value is negative\n");
    else
        printf("value is positive\n");
    printf("decimal point at %d\n", point);
}