Checking for multiple characters in nsstring

Question

i have a string and i want to check for the multiple characters in this string the following code i working fine for one character how to check for the multiple characters.

Answer 1

UPDATE: The previous example was broken, as NSScanner should not be used like that. Here's a much more straight-forward example:

NSString* string = @"ABCCDEDRFFED";
NSCharacterSet* characters = [NSCharacterSet characterSetWithCharactersInString:@"ABC"];
NSUInteger characterCount;

NSUInteger i;
for (i = 0; i < [yourString length]; i++) {
  unichar character = [yourString characterAtIndex:i];
  if ([characters characterIsMember:character]) characterCount++;
}

NSLog(@"Total characters = %d", characterCount);