How to concatenate two strings on iPhone?

Question

How to connect string "Hello" and string "World" to "HelloWorld"? Looks like "+" doesn't work.

Answer 1

NSString *string = [NSString stringWithFormat:@"%@%@", @"Hello", @"World"];
NSLog(@"%@", string);

That should do the trick, although I am sure there is a better way to do this, just out of memory. I also must say this is untested so forgive me. Best thing is to find the stringWithFormat documentation for NSString.

Answer 2

How about:

NSString *hello = @"Hello";
NSString *world = @"World";
NSString *helloWorld = [hello stringByAppendingString:world];