.

class A {int *a; public:

A(int x=0):a(new int(x)){} ~A() {delete a;}

int getA() {return *a;} void setA(int x) {*a=x;} };

void main() {A x1,x2(3); A *p=&x2;

(*p).setA(x2.getA()+5); x1.setA(10+x1.getA());

cout<

108;

六、程序设计题(本大题共1小题，共10分) 1. 已知交通工具类定义如下。

要求：（1)实现这个类；（2）定义并实现一个小车类car，是它的公有派生类，小车本身的私有 属性有载人数，小车的函数有init(设置车轮数，重量和载人数），getpassenger(获取载人数 )，print（打印车轮数，重量和载人数）。 class vehicle {protected:

int wheels;//车轮数 float weight;//重量 public:

void init(int wheels,float weight); int get_wheels(); float get_weight(); void print(); };

void vehicle::init(int wheels,float weight) {this->wheels=wheels; this->weight=weight; cout<

int vehicle::get_wheels() {return wheels; }

float vehicle::get_weight() {return weight;}

void vehicle::print()

{cout<<\车轮数：\重量：\

.

.

.