new file mode 100644
--- /dev/null
+++ b/data_types.c
@@ -0,0 +1,61 @@
+/**
+ *     $Id: data_types.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $
+ * $Source: /development/c/demos/data_types.c,v $
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <limits.h>
+#include <float.h>
+
+typedef unsigned char UCHAR;
+typedef signed char SCHAR;
+
+typedef unsigned short USHORT;
+typedef signed short SSHORT;
+
+typedef unsigned int UINT;
+typedef signed int SINT;
+
+typedef unsigned long ULONG;
+typedef signed long SLONG;
+
+#ifdef __USE_ISOC99
+typedef unsigned long long ULLONG;
+typedef signed long long SLLONG;
+#endif
+
+int main (int argc, char **argv)
+{
+    printf ("%20s %4s %20s %25s\n\n", "Type", "BITS", "MIN", "MAX");
+
+    printf ("%20s %4d %20d %25d\n", "   signed char", 8 * sizeof (SCHAR), CHAR_MIN, CHAR_MAX);
+    printf ("%20s %4d %20d %25d\n", "  signed short", 8 * sizeof (SSHORT), SHRT_MIN, SHRT_MAX);
+    printf ("%20s %4d %20d %25d\n", "    signed int", 8 * sizeof (SINT), INT_MIN, INT_MAX);
+    printf ("%20s %4d %20ld %25ld\n", "   signed long", 8 * sizeof (SLONG), LONG_MIN, LONG_MAX);
+
+#ifdef __USE_ISOC99
+    printf ("%20s %4d %20lld %25lld\n\n", "  signed llong", 8 * sizeof (SLLONG), (SLLONG) LLONG_MIN, LLONG_MAX);
+#endif
+
+    printf ("%20s %4d %20d %25u\n", " unsigned char", 8 * sizeof (UCHAR), 0, UCHAR_MAX);
+    printf ("%20s %4d %20d %25u\n", "unsigned short", 8 * sizeof (USHORT), 0, USHRT_MAX);
+
+    printf ("%20s %4d %20d %25u\n", "  unsigned int", 8 * sizeof (UINT), 0, UINT_MAX);
+    printf ("%20s %4d %20lu %25lu\n", " unsigned long", 8 * sizeof (ULONG), 0UL, ULONG_MAX);
+
+#ifdef __USE_ISOC99
+    printf ("%20s %4d %20llu %25llu\n", "unsigned llong", 8 * sizeof (ULLONG), 0ULL, ULLONG_MAX);
+#endif
+
+#ifdef __USE_ISOC99
+    printf ("\n%20s %4d %20d  %20d\n", "_Bool", 8 * sizeof (_Bool), 0, 1);
+#endif
+
+    printf ("\n%20s %4d \t\t %#1.2g \t\t %#1.2g\n", "float", 8 * sizeof (float), (double)FLT_MIN, (double)FLT_MAX);
+    printf ("%20s %4d \t\t %#1.2g \t\t %#1.2g\n", "double", 8 * sizeof (double), (double)DBL_MIN, (double)DBL_MAX);
+
+    return 0;
+}