#ifndef should be lower case
@@ -89,15 +89,15 @@ Try to keep your switch statement similar to the following format:
### Include guards in header files/files for importing
-When making files for importing, adding `#IFNDEF` and `#DEFINE` in the beginning of the file with a specified tag and `#ENDIF` at the end disallows double declarations. The tag is normally the name of the file in uppercase, with dots and spaces represented as underscores.
+When making files for importing, adding `#ifndef` and `#define` in the beginning of the file with a specified tag and `#endif` at the end disallows double declarations. The tag is normally the name of the file in uppercase, with dots and spaces represented as underscores.
For example, a file called `test.h` should have:
```c
-#IFNDEF TEST_H
-#DEFINE TEST_H
+#ifndef TEST_H
+#define TEST_H
//put code here
-#ENDIF
+#endif // TEST_H
```
