求编写一个程序，悬赏5点体力。具体请看内容 - 数学建模社区-数学中国

#include<iostream>4 m; |. S. _. Y* l' o, L1 G
using namespace std;
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class vehicle
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protected:
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int wheels;: r$ r: x `! q1 J7 ^' u
double weight;
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public:0 W; Y4 c+ W* w. Z. R
vehicle(int wh=0,double we=0):wheels(wh),weight(we){}. b. W( X8 g# `. p. Q% U2 M
int GetWheels(){return wheels;}
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double GetWeight(){return weight;}/ H# p* H {& \, r' V- a
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};
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class car:private vehicle8 f$ D0 ?, ^5 V6 `! u& N& Z
{
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int passenger_load;3 m9 D% A% f( V5 D6 K% S4 z) `1 i% W
public:
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car(int wh=0,double we=0,int pa=0):vehicle(wh,we),passenger_load(pa){}6 d! H: ?1 y1 k* o, q
int GetPassenger_load(){return passenger_load;}0 H( }0 m) N1 d/ _
int Car_GetWheels(){return GetWheels();}3 z$ B) S9 e1 @
double Car_GetWeight(){return GetWeight();}
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};
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class truck:private vehicle
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int passenger_load;double payload;5 ?( \# K4 g! ~' M
public:
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truck(int wh=0,double we=0,int pa=0,double pay=0):vehicle(wh,we),passenger_load(pa),payload(pay){}
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int GetPassenger_load(){return passenger_load;}! `$ j# O. }8 E, C) n2 M
double GetPayload(){return payload;}6 n/ Z4 j* z" x
int Truck_GetWheels(){return GetWheels();}# v$ d5 _. f2 ]6 w* g* N: r
double Truck_GetWeight(){return GetWeight();}
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int main()
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vehicle a(4,100);# }2 r j) j7 R& _5 T; g
cout<<a.GetWheels()<<endl<<a.GetWeight()<<endl;& o" |& n4 g& {
car b(4,100,6);
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cout<<b.Car_GetWheels()<<endl<<b.Car_GetWeight()<<endl<<b.GetPassenger_load()<<endl;, n7 h/ C$ p0 o
truck c(4,100,50,6);' ]0 R4 K7 S+ ] i
cout<<c.Truck_GetWheels()<<endl<<c.Truck_GetWeight()<<endl<<c.GetPassenger_load()<<endl<<c.GetPayload()<<endl;# T- D* E( Q; U ~2 [
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system("pause");
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return 0;
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}

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