Getting index of a character in NSString with offset & using substring in Objective-C

Question

I have a string!

   NSString *myString=[NSString stringWithFormat:@\"This is my lovely string\"];

What I want to do is:

1. Assuming

Answer 1

- (NSRange)rangeOfString:(NSString *)aString options:(NSStringCompareOptions)mask range:(NSRange)aRange

For the options use: NSBackwardsSearch

NSRange range = [myString rangeOfString:@" " options:NSBackwardsSearch range:NSMakeRange(0, 11)];

Example:

NSString *myString=[NSString stringWithFormat:@"This is my lovely string"];
NSRange range = [myString rangeOfString:@" " options:NSBackwardsSearch range:NSMakeRange(0, 11)];
NSLog(@"range.location: %lu", range.location);
NSString *substring = [myString substringFromIndex:range.location+1];
NSLog(@"substring: '%@'", substring);

NSLog output:

range.location: 10
substring: 'lovely string'

Of course there should be error checking that range.location does not equal NSNotFound