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c面向对象程序设计教程习题答案

【篇一：c++程序设计教程--面向对象分册(郑秋生)完整

答案】

、 选择题

1.c 2.b 3.c 4.a 5.c 6.a 7.c 8 c 9a 10 c 二、阅读题 1．x=2,y=3 2．x=2,y=3 x!=y 3．

cstatic::va1=0 cs1.vai=1 cs2.val=2 cs1.val=4 cs2.vai=4 四、改错题

#include string.h

#include iostream.h class person {

public:

person(int n,char* nam,char s) {

num=n;

strcpy(name,nam); sex=s;

coutconstructor called.endl; }

~person( ) {

coutdestructor called.endl; }

void display( ) {

coutnum: numendl; coutname: nameendl;

coutsex: sexendlendl; }

private: int num;

char name[10]; char sex; };

int main( ) {

person s1(10010,wang_li,f); s1.display( );

person s2(10011,zhang_fun,m); s2.display( ); return 0; }

五、编程题 5．1

#include iostream

using namespace std; class cbox {

public :

cbox(double l=0,double w=0,double h=0); double area();

double volume (); private :

double lengh; double width; double high; };

cbox::cbox(double l,double w,double h) {

lengh=l; width=w; high=h; }

double cbox::area() {

return 2*(lengh*width+lengh*high+width*high); }

double cbox::volume () {

return lengh*width*high; }

void main() {

cbox box1(4,5,6);

coutbox1.area()endl;

coutbox1.volume()endl; } 5.2

#include iostream

using namespace std; class cpoint {

public :

cpoint(double a=0,double b=0) {

x=a; y=b; }

cpoint(cpoint p) {

x=p.x; y=p.y; }

void print() {

cout(x,y); }

private : double x,y; };

class cline {

public:

cline(double x1=0,double y1=0,double x2=0,double y2=0):p1(x1,y1),p2(x2,y2) { }

cline(cpoint x,cpoint y):p1(x),p2(y)