Find a char or string in a NSString

Find a char or string in a NSString is very simple,
we have for example a NSString called thestring that contains “auto and bike”.
To find the word and, the code is here:

NSString *thestring = @"auto and bike";
if ([thestring rangeOfString:@"and"].location == NSNotFound) {
  //not found
} else {
  //found
}

NSString *thestring = @"auto and bike";

if ([thestring rangeOfString:@"and"].location == NSNotFound) {

//not found

} else {

//found

}