Error when Using #define to set pins

Using Arduino Programming Questions
3

tms8c8:
I keep getting the following error when I try to compile:

Program:106: error: expected primary-expression before '=' token

There is no "=" used for assignment when using a #define.

#define MYPIN 1

works, while

#define MYPIN = 1

won't. Also, the other common mistake is to use a semicolon

#define MYPIN 1;

which in general will also cause many interesting problems.

Finally, good style is to use all uppercase for your #define macros, i.e., MYPIN rather than MyPin, if MyPin could be confused with a variable. Helps with readability and maintenance.