Changed file structure for LC13,14 and 15

LC14/PointerFunc1/pointer_function_example_1.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+// As we are using the function BEFORE it is actually written we need to provide the
+// prototype so that the compiler can verify we are calling it correctly
+
+void CalculateArea ( double Radius, double *pArea);  // note the ‘*’
+
+// This is the main code for our application
+
+int main()
+{
+    double radius, area;
+    radius = 1.0;    
+    CalculateArea (radius, &area);    
+	
+	printf ("The area of circle of radius %f is %f\n", radius, area);
+    return 0;
+    
+}
+
+
+// And here is our function
+
+// Note: Pi is written out simply to match the notes, M_PI could also be used
+
+void CalculateArea ( double Radius, double *pArea )
+{
+    *pArea = 3.14159265 * Radius * Radius;
+    return;
+}