Source program and the corresponding error have bosses help you revised

CodePudding user response:

# define KEY1 PCin (0) & lt; Don't use the semicolon - behind

CodePudding user response:

The next line add several layers of brackets, let oneself see understand write, errors should add parentheses

CodePudding user response:

reference 1/f, stupid dog flew first response:

# define KEY1 PCin (0) & lt; - don't use the semicolon behind

1/f, right, this error is caused by a macro definition, it is ok to remove the semicolon

CodePudding user response:

Macro definition with a semicolon, cannot be used to compare oh, want to go to a semicolon