iOS-OC复合语句

- (void)uiConfig
{
UILabel *oldLabel = [[UILabelalloc]initWithFrame:CGRectMake(100,50, 100, 30)];
[self.viewaddSubview:oldLabel];
oldLabel.backgroundColor = [UIColorlightGrayColor];
oldLabel.text = @"简单写法语句";
oldLabel.textAlignment =NSTextAlignmentCenter;

//下面是复合语句
UILabel *label = nil;
label = ({
UILabel *lab = [[UILabelalloc]initWithFrame:CGRectMake(100,100, 100, 30)];
[self.viewaddSubview:lab];
lab.backgroundColor = [UIColorlightGrayColor];
lab.text = @"高大上写法语句";
lab.textAlignment =NSTextAlignmentCenter;
lab;
});

//上面两段代码意思完全一样，只不过写法不同罢了
//但是复合语句的好处
/*
1.相关属性在一起写着，一目了然；
2.看起来更牛逼，高大上；
3...
*/
}