productclassconversion.cpp

来自「C++ sample code, for the book: C++ blac」· C++ 代码 · 共 52 行

#include <iostream>
#include <string>
using namespace std;

class product 
{     
    int number;        
public:         
    string name;              
    int get_number(){return number;}
    void set_number(int n){number = n;}
    product();
    product(string text);
    operator int() const;
};

product::product()
{
    name = "";
    number = 0;
}

product::product(string text)
{
    name = text;
    number = 0;
}

product::operator int() const
{
    return number;
}

int main()
{
    product oranges;
    string product_name("oranges");

    oranges = product_name;

    oranges.set_number(200);

    int number_of_oranges = oranges;

    cout << "Number of " << oranges.name << ": " << number_of_oranges << endl;


    return 0;
}