1. 程式人生 > >iOS 字串小寫轉大寫

iOS 字串小寫轉大寫

 NSString *test = @"Hello World";
    
    // 小寫
    NSString *lower = [test lowercaseString];
    
    // 大寫
    NSString *upper = [lower uppercaseString];
   
    
    NSLog(@"test: %@",lower);
    NSLog(@"test: %@",upper);

OK