1 files changed, 79 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/SNIP/inchcvrt.c b/reference/C/CONTRIB/SNIP/inchcvrt.c
new file mode 100755
index 0000000..fb2cdb6
--- /dev/null
+++ b/reference/C/CONTRIB/SNIP/inchcvrt.c
@@ -0,0 +1,79 @@
+/*
+**  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;
+}