Addresses #3009, corrects C++ headers description

c++.html.markdown

@@ -71,10 +71,16 @@ void func(); // function which may accept any number of arguments
 // Use nullptr instead of NULL in C++
 int* ip = nullptr;
 
-// C standard headers are available in C++,
-// but are prefixed with "c" and have no .h suffix.
+// C standard headers are available in C++.
+// C headers end in .h, while 
+// C++ headers are prefixed with "c" and have no ".h" suffix.
+
+// The C++ standard version:
 #include <cstdio>
 
+//The C standard version:
+#include <stdio.h>
+
 int main()
 {
     printf("Hello, world!\n");