
#include <iostream>
#include <iomanip>
using namespace std;
class Bike
{
private:
double speed;
public:
void init(int s)
{
speed = s;
}
void run()
{
cout<<"It is running at speed of ";
cout<<speed<<endl;
}
void stop()
{
cout<<"STOP!"<<endl;
}
void speedUp(int s)
{
speed += s;
}
void speedDown(int s)
{
speed -= s;
}
};
int main()
{
Bike b1;
b1.init(10);
b1.run();
b1.speedUp(10);
b1.run();
b1.speedDown(5);
b1.run();
b1.stop();
return 0;
}



初级程序员
by: Jobs 发表于:2018-04-09 21:21:39 顶(0) | 踩(0) 回复
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回复芙蓉妹妹 : 客气
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