Don't really get C Functions in Objective-C

[Scuba]

I haven't done anything in C for many years. But I've gotten into Objective-C easily and I think its great. However, even trying to embed a simple C function is something I can't get to work. This gives me a compiler error of "Conflicting Types", does anyone know what I'm doing wrong?

NSString* testStringFunction(NSString *in) {
	return [in stringByReplacingOccurrencesOfString:@"a" withString:@"b"];
}

... somewhere else in a Obj-C selector ...
NSLog(testStringFunction(@"This 'a' should be a 'b' now."));

Thanks!

[Scuba]

I did some searching, and thought using CFStringRef instead of NSString for the return type would work, but it didn't. Any ideas?

[PhoneyDeveloper]

If I compile that function in a .m file it compiles without warnings. Are you trying to compile it in a .c file?

[Scuba]

Originally Posted by PhoneyDeveloper

If I compile that function in a .m file it compiles without warnings. Are you trying to compile it in a .c file?

The function compiles for me. But oddly, when I add the next line with the NSLog a compiler error shows up near the function. And nope, its in a .m with my obj-c code.

[PhoneyDeveloper]

That works for me too with no problems.

What's an 'Obj-C selector'? Do you mean method?

I built a Nav-Based App from template.
I opened up the AppDelegate file.
I pasted in your C function at the top of the file.
I pasted in the NSLog call inside applicationDidFinishLaunching:
It then compiled without warnings.