diff --git a/SimpleExecutable/hello.h b/SimpleExecutable/hello.h
deleted file mode 100644
index a81e8c0..0000000
--- a/SimpleExecutable/hello.h
+++ /dev/null
@@ -1,3 +0,0 @@
-#include <iostream>
-
-void hello();
diff --git a/SimpleExecutable/main.cc b/SimpleExecutable/main.cc
index 76a9e99..9369f09 100644
--- a/SimpleExecutable/main.cc
+++ b/SimpleExecutable/main.cc
@@ -3,8 +3,6 @@
 #include <stdlib.h>
 #include <math.h>
 
-// #include "hello.h"
-
 int main (int argc, char *argv[])
 {
   if (argc < 2)
@@ -13,9 +11,17 @@ int main (int argc, char *argv[])
     return 1;
     }
   double inputValue = atof(argv[1]);
-  double outputValue = sqrt(inputValue);
-  fprintf(stdout,"The square root of %g is %g\n",
-          inputValue, outputValue);
+  double outputValue = sqrt(abs(inputValue));
+  if ( inputValue >= 0. )
+    { 
+      fprintf(stdout,"The square root of %g is %g\n",
+	      inputValue, outputValue); 
+    }
+  else
+    {
+      fprintf(stdout,"The square root of %g is %g x i\n",
+	      inputValue, outputValue); 
+    }
 
   // hello();
   return 0;