摘要： test 1 // 2 // Square.m 3 // Inherit 4 // 5 // Created by zz cienet on 1/10/12. 6 // Copyright 2012 __MyCompanyName__. All rights reserved. 7 // 8 9 #import "Square.h"10 11 12 @implementation Square : Rectangle13 14 -(void) setSide:(int)s15 {16 [self setWidth:s andHeight: s];17 }18 19 -(in 阅读全文