Merge pull request #29 from phoppermann/pragma-once

CppGenerator: use #pragma once

src/main/java/edu/nps/moves/xmlpg/CppGenerator.java

@@ -179,9 +179,8 @@ public void writeHeaderFile(GeneratedClass aClass) {
  outputFile.createNewFile();
  PrintWriter pw = new PrintWriter(outputFile);
 
- // Write the usual #ifdef to prevent multiple inclusions by the preprocessor
- pw.println("#ifndef " + aClass.getName().toUpperCase() + "_H");
- pw.println("#define " + aClass.getName().toUpperCase() + "_H");
+ // prevent multiple inclusions by the preprocessor
+ pw.println("#pragma once");
  pw.println();
 
  // Write includes for any classes we may reference. this generates multiple #includes if we
@@ -410,9 +409,6 @@ public void writeHeaderFile(GeneratedClass aClass) {
  pw.println("}");
  }
 
- // Close if #ifndef statement that prevents multiple #includes
- pw.println("\n#endif");
-
  this.writeLicenseNotice(pw);
 
  pw.flush();