摘要: //声明字符串; NSString *str=@"guiyangxueyuan"; NSLog(@"%@",str);//结果:guiyangxueyuan //查找某个字符。。。。。。characterAtIndex: unichar ch=[str characterAtIndex:3 ]; N 阅读全文
posted @ 2016-03-02 20:14 右手指尖轻轻触 阅读(278) 评论(0) 推荐(0) 编辑