Compile warning. Ch.3, p.53.

PEHowland · September 12th, 2010, 03:24 AM

For the example on p.53-54 in Ch.3 it compiles and runs, but shows a compile warning against the line:

NSLog([NSString stringWithFormat:@"Index is %d", buttonIndex]);

stating "Format not a string literal and no format arguments". What is it complaining about and how can I fix this?

Incidentally, I note that when I run the program in the emulator, the messages only log to the console window the first time the program is run. If I re-run the application within the emulator, nothing is logged - unless I recompile and run.

thepianoguy · September 13th, 2010, 10:31 PM

The book uses the NSLog in an odd way in a number of places. The way to code the line without warnings is:

Code:

NSLog(@"Index is %d",buttonIndex);

When you compile (Build and Run) the program and it runs in the emulator you will notice that the Tasks "stop sign" lights up since it is running in the debugger as well. When you launch it in the simulator it is not running in the debugger. Tasks is dim.