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/*
** Convert English measurement units
**
** Takes command line arguments in inches and converts to:
**
** 1. feet and inches (expressed as floating point)
** 2. feet and inches (expressed as fraction)
**
** public domain demo by Bob Stout
** uses ROUND.H from SNIPPETS
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "round.h"
#define BASE 64.0
void cnvrt_inches(double input,
double *feet,
double *inches,
double *dec_inches,
double *num_inches,
double *den_inches)
{
double quot, rem, temp;
/*
** Split feet and inches
*/
*feet = floor(input / 12.0);
*inches = fmod(input, 12.0);
/*
** Get integer inches and fractions
*/
*num_inches = modf(*inches, dec_inches) * BASE;
*num_inches = fround(*num_inches, 0);
if (0.0 == *num_inches)
return;
/*
** Reduce fractions to lowest common denominator
*/
for (*den_inches = BASE;
0.0 == fmod(*num_inches, 2.0);
*den_inches /= 2.0, *num_inches /= 2.0)
{
;
}
}
main(int argc, char *argv[])
{
double arg, feet, inches, dec, num, den, dummy;
while (--argc)
{
arg = atof(*(++argv));
cnvrt_inches(arg, &feet, &inches, &dec, &num, &den);
printf("%f Inches = %d' %.5f\" or %d' %d",
arg, (int)feet, inches, (int)feet, (int)dec);
if (0.0 == num)
puts("\"");
else
{
printf("-%d/%d\"", (int)num, (int)den);
if (modf(num, &dummy))
puts(" (approx.)");
else puts("");
}
}
return EXIT_SUCCESS;
}
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