Question

I have a constant defined as:

#define BEGIN_IMPORT_STRING @"Importing Hands!";

But I get an error when I try to concat with:

NSString *updateStr = [NSString stringWithFormat:@"%@%@", BEGIN_IMPORT_STRING, @" - Reading "];

This doesn’t happen if I replace it with a string literal

NSString *updateStr = [NSString stringWithFormat:@"%@%@", @"foo", @" - Reading "];

Or a local string

NSString *temp = @"foo";
NSString *updateStr = [NSString stringWithFormat:@"%@%@", temp, @" - Reading "];

Answer 1

You need to remove the semicolon from your #define:

#define BEGIN_IMPORT_STRING @"Importing Hands!"

To the compiler, the resulting line looks like this:

NSString *updateStr = [NSString stringWithFormat:@"Importing Hands!";, @" - Reading "];