面向对象技术与C考试A卷答案.doc

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1、一、程序填空题（共5题，每空2分，共30分）1、#includeclassA{_______(1)________voidf(inti){cout<

2、cludeclassp_class{intnum;public:voidset_num(intval){num=val;}voidshow_num();};voidp_class::show_num(){cout<show_num();________(4)________;p->show_num();_______

3、_(5)________;p->show_num();}输出：203010参考答案：(3)p=&ob[1](4)p=&ob[2](5)p=&ob[0]3、#includeclassTdate{intmonth;intday;intyear;intIsLeapYear(){return(year%4==0&&year%100!=0)

4、

5、(year%400==0);}________(6)________voidSet(intm,intd,inty){month=m;day=d;year=y;}________(7)_____

6、___;};________(8)________Print(){cout<classTime{

7、public:Time(inth,intm){hours=h;minutes=m;}voidTime12();________(9)________Time24(Timetime);private:inthours,minutes;};________(10)________Time12(){if(hours>12){cout<

8、_______}voidmain(){TimeT1(20,30),T2(10,45);T1.Time12();Time24(T1);T2.Time12();Time24(T2);}输出：8:30PM20:3010:45AM10:45参考答案：(9)voidfriend(10)voidTime::(11)<

9、区别是：其重载的运算符[]要对下标是否越界进行检查。#include"iostream.h"#include"stdlib.h"classARRAY{int*v;//指向存放数组数据的空间ints;//数组大小public:ARRAY(inta[],intn);~ARRAY(){delete[]v;}intsize(){returns;}int&operator[](intn);};ARRAY::ARRAY(inta[],intn){if(n<=0){v=NULL;s=0;return;}s=n;v=________(12)________;fo

10、r(inti=0;i