字符串 转 大写 字符串 长度

- (void)viewDidLoad {
    [super viewDidLoad];
    //创建一个字符串 内容为 my name is qq
    NSString * str = @"my name is qq ";
  // uppercaseString 转大写的方法
    NSString * daxie = [str uppercaseString];
    //length 为字符长度
    NSUInteger lenthree = [daxie length];
  //字符串大写
    NSLog(@"daxie %@",daxie);
  //字符串长度
    NSLog(@"lenthree = %ld",le![屏幕快照 2018-03-29 10.56.20.png]
    
    UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(200, 100, 200, 40)];
    label.text = daxie;
    label.textColor = [UIColor redColor];
    [self.view addSubview:label];
}

屏幕快照 2018-03-29 10.56.20.png