--- Syntax Highlighting Test File for Diff results
--- Comment Lines are like this
--- cpp.cpp     2007-06-26 07:14:22.000000000 -0500
+++ hello_diff.cpp      2007-08-06 17:01:47.000000000 -0500
@@ -2,24 +2,29 @@
  *
  */
 #include<iostream>
-#include<cstdlib>
 
 using namespace std;
 
 int main(void)
 {
-    cout << "\nHello World" << endl;
+    cout << "\nHello World!" << endl;
     cout << "\nUnclosed String << endl;
 
     // One line comment
     int a = 0;
-    
-    exit(a);
+    cout << add(a, 22) << endl;
 }
 
-int add(x, y)
+// Add two numbers
+int add(int x, int y)
 {
     return x + y;
 }
 
+// Subtract two numbers
+int sub(int x, int y)
+{
+    return x - y;
+}
+
 // EOF