Создать класс действительных чисел

#include<iostream>namespace std;zel
 
{f;:() {f=0;}(int f) {this->f=f;}get_zel() {return f;}set_zel (int f) {this->f=f;}show() {cout<< «F=»<<f<<endl;}zel:operator ++(int a)
 
{a=a+a+a;
 
}zel:operator +(int a)
 
{a=a+3;
 
}zel:operator - (int a)
 
{int t;
 
=a-a-a;t;
 
}zel:operator - (int a)
 
{a=a-5;
 
}
 
};main()
 
{a;b;c;<< «Vvedite a v formate»<<endl;>>c;x;<< «Vvedite b v»<<endl;>>x;.set_zel(c);.set_zel(x);.show();.show();
 
++;<<c;<<c+<<endl;-;<<c;<<c-<<endl;(«pause»);
 
return 0;
 
}

#include <iostream>
 
class ActualNumber
{
    double _number;
public:
    ActualNumber(double number);
 
    ActualNumber operator+(const ActualNumber& rhs);
    ActualNumber& operator++();
 
    ActualNumber& operator=(const ActualNumber& rhs);
    friend std::ostream& operator<<(std::ostream& os, const ActualNumber& rhs);
    friend ActualNumber operator-(const ActualNumber& lhs, const ActualNumber& rhs);
    friend ActualNumber& operator--(ActualNumber& rhs);
};
 
ActualNumber::ActualNumber(double number): _number(number)
{
 
}
 
ActualNumber ActualNumber::operator+(const ActualNumber& rhs)
{
    ActualNumber tmp(_number);
    tmp._number += rhs._number;
    return tmp;
}
 
ActualNumber& ActualNumber::operator=(const ActualNumber& rhs)
{
    _number = rhs._number;
    return *this;
}
 
ActualNumber& ActualNumber::operator ++()
{
    ++_number;
    return *this;
}
 
ActualNumber operator-(const ActualNumber& lhs, const ActualNumber& rhs)
{
    ActualNumber tmp(lhs._number);
    tmp._number -= rhs._number;
    return tmp;
}
 
 
ActualNumber& operator--(ActualNumber& rhs)
{
    --rhs._number;
    return rhs;
}
 
std::ostream& operator<<(std::ostream& os, const ActualNumber& rhs)
{
    os << rhs._number;
    return os;
}
 
int main()
{
    ActualNumber n1(2.0);
    std::cout << (++n1) << '\n';
    std::cout << (n1 + ActualNumber(3.0)) << '\n';
    std::cout << (n1 - 4.0) << '\n';
    std::cout << (--n1);
    return 0;
}