Read UTF8 character in specify position from a NSString

Question

    NSString* str = @\"1二3四5\";
    NSLog(@\"%c\",[str characterAtIndex:0]); 
    NSLog(@\"%c\",[str characterAtIndex:1]);  

NSString - characterAtIndex works we

Answer 1

You'd use the more verbose methods:

NSRange rangeOfSecondCharacter = [str rangeOfComposedCharacterSequenceAtIndex:1];
NSString *secondCharacter = [str substringWithRange:rangeOfSecondCharacter];

...with proper bounds and range checking, of course. Note that this gives you an NSString, an object, not a unichar or some other primitive data type.