Converting NSStrings to uppercase, lowercase and capitalizing each word in a string

NSString *str = @"easy tips for programming";
 
// Convert string to uppercase
NSString *upperStr = [str uppercaseStringWithLocale:[NSLocale currentLocale]];
NSLog(@"Upper Case: %@", upperStr);
 
// Convert string to caps
NSString *capStr = [upperStr capitalizedStringWithLocale:[NSLocale currentLocale]];
NSLog(@"Capital: %@", capStr);
 
// Convert string to lowercase
NSString *lowerStr = [capStr lowercaseStringWithLocale:[NSLocale currentLocale]];
NSLog(@"Lower Case: %@", lowerStr);

output:

Upper Case: EASY TIPS FOR PROGRAMMING

Capital: Easy Tips For Programming

lower Case: easy tips for programming