new file mode 100644
--- /dev/null
+++ b/fak.c
@@ -0,0 +1,32 @@
+/*
+ *     $Id: fak.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $
+ * $Source: /development/c/demos/fak.c,v $
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+long fak (int i)
+{
+    if (i == 0)
+        return 1;
+    else if (i > 0)
+        return (i * fak (i - 1));
+    else
+        return (i * fak (i + 1));
+}
+
+int main (int argc, char **argv)
+{
+    int number;
+
+    printf ("Enter a number: ");
+    if (scanf ("%d", &number) < 0) {
+        printf ("READ ERROR\n");
+        return EXIT_FAILURE;
+    }
+
+    printf ("The faktorial of %d is %ld\n", number, fak (number));
+
+    return EXIT_SUCCESS;
+}