通信10面向?qū)ο蟪绦蛟O(shè)計(jì)試卷A答案通信10面向?qū)ο蟪绦蛟O(shè)計(jì)試卷A答案通信10面向?qū)ο蟪绦蛟O(shè)計(jì)試卷A答案V:1.0精細(xì)整理，僅供參考通信10面向?qū)ο蟪绦蛟O(shè)計(jì)試卷A答案日期：20xx年X月通信10級(jí)面向?qū)ο蟪绦蛟O(shè)計(jì)試卷A參考答案一、填空題(共40分，每空2分)⒈堆⒉this⒊this指針⒋釋放對(duì)象⒌類模板⒍多態(tài)性⒎不可訪問(wèn)⒏封裝性⒐拷貝構(gòu)造⒑共有⒒多重⒓友元類⒔const⒕相同副本⒖a的常引用⒗static⒘沒(méi)有this指針⒙try(檢測(cè))⒚純虛函數(shù)⒛基類的指針二、單項(xiàng)選擇題(共30分，每小題分)⒈D⒉C⒊AB⒋B⒌C⒍D⒎A⒏A⒐D⒑C⒒C⒓C⒔D⒕C⒖B⒗C⒘D⒙D⒚C⒛D三、綜合題(共30分)㈠(3分)00㈡(3分)0,017,18㈢（3分）x=5rx=y=㈣（4分）Constructing10100Destructing㈤（4分）㈥（4分）㈦(9分)給出下面的基類：#include<>classarea_cl{protected:doubleheight;doublewidth;public:area_cl(doubler,doubles);virtualdoublearea()=0;};要求：⑴寫(xiě)出基類area_cl的構(gòu)造函數(shù)；⑵建立area_cl的兩個(gè)派生類rectangle(矩形)與isosceles(三角形)，讓每一個(gè)派生類都包含一個(gè)計(jì)算面積的函數(shù)area()。⑶寫(xiě)出主程序，計(jì)算height與width分別為與的矩形面積，以及求height與width分別為與的三角形面積。#include<>classarea_cl{protected:doubleheight;doublewidth;public:area_cl(doubler,doubles);virtualdoublearea()=0;};area_cl::area_cl(doubler,doubles)//⑴分{height=r;width=s;}classrectangle:publicarea_cl//⑵2分{public:rectangle(doubler,doubles):area_cl(r,s){}doublearea(){returnheight*width;} };classisosceles:publicarea_cl//⑵2分{public:isosceles(doubler,doubles):area_cl(r,s){}doublearea(){returnheight*width/2;} };voidmain()//⑶分{area_cl*p; rectanglerect,; isoscelesisos,