From 3d18a567244e12d5a510317a5f4acb4cab5e3526 Mon Sep 17 00:00:00 2001
From: Steven Schronk <steven@schronk.com>
Date: Tue, 24 Nov 2009 19:10:46 -0600
Subject: [PATCH] Added program that illustrates passing data by value and by
 address

---
 double.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 double.c

diff --git a/double.c b/double.c
new file mode 100644
index 0000000..2aa85d6
--- /dev/null
+++ b/double.c
@@ -0,0 +1,47 @@
+#include <stdio.h>
+
+void doubleData( float x, float y);
+void doubleDataByAddress( float *x, float *y);
+
+main()
+{
+
+  float x = 10.0;
+  float y = 5.0;
+
+  printf("First Arg: %f\n", x);
+  printf("Second Arg: %f\n", y);
+
+
+  doubleData(x, y);
+
+  printf("First Arg: %f\n", x);
+  printf("Second Arg: %f\n", y);
+
+
+  doubleDataByAddress(&x, &y);
+
+  printf("First Arg: %f\n", x);
+  printf("Second Arg: %f\n", y);
+
+  return 0;
+
+}
+
+void doubleData( float x, float y)
+{
+  x *= 2.0;
+  y *=  2.0;
+  printf("First Arg: %f\n", x);
+  printf("Second Arg: %f\n", y);
+}
+
+void doubleDataByAddress( float *x, float *y)
+{
+  *x *= 2.0;
+  *y *=  2.0;
+  printf("First Arg: %f\n", *x);
+  printf("Second Arg: %f\n",* y);
+}
+
+
-- 
2.11.4.GIT