设计一个计算器类Claculator，它只有一个用于计数的数据成员count。该计算器的有效计数范围是0~65535，实现计数器的前自增、后自增、前自减、后自减、两个计算器相加减运算

#include"iostream"
using namespace std;
class Calculator{
private:
double count;
public:
Calculator(double a):count(a){};
double getcount(){
return count;
}
void  operator++(int){
count++;
cout << count << endl ;
}
void  operator++(){
++count;
cout << count << endl ;
}
void  operator--(int){
count--;
cout << count << endl ;
}
void  operator--(){
--count;
cout << count << endl;
}
void  operator+(Calculator b){
cout << this->count+b.count << endl ;
}
void operator-(Calculator b){
cout << this->count-b.count << endl ;
}
};

#include"iostream"
#include"hanshu.h"
using namespace std;

void main()
{
Calculator a(6335546546),b(20.1);
if((a.getcount()>=0)&&(a.getcount()<=65535)){
a++;
++a;
a--;
--a;
if((b.getcount()>=0)&&(b.getcount()<=65535)){
a+b;
a-b;
}
}
}