Currency.h Source File

00001 #ifndef _CURRENCY_H
00002 #define _CURRENCY_H
00003 
00004 #include <iostream>
00005 
00006 #include <string>
00007 
00008 using namespace std;
00009 
00010 // ---------------------------------------------------------------------------
00011 //  Class Currency
00012 // ---------------------------------------------------------------------------
00022 class Currency {
00023 
00024   public:  
00025       
00026     Currency();
00027     Currency(const Currency&);
00028     Currency(int rhs);
00029     Currency(float rhs);   
00030     Currency(double rhs);   
00031     Currency(int integer, int fraction);   
00032     ~Currency();
00033 
00034     Currency& operator=(const Currency& rhs);
00035     Currency& operator=(const float rhs);
00036     Currency& operator=(const int rhs);
00037 
00038     Currency& operator+=(const Currency& rhs);
00039     Currency& operator+=(const float rhs);
00040     Currency& operator+=(const int rhs);
00041 
00042     Currency& operator-=(const Currency& rhs);
00043     Currency& operator-=(const float rhs);
00044     Currency& operator-=(const int rhs);
00045 
00046     Currency& operator*=(const Currency& rhs);
00047     Currency& operator*=(const float rhs);
00048     Currency& operator*=(const int rhs);
00049 
00050     Currency& operator/=(const Currency& rhs);
00051     Currency& operator/=(const float rhs);
00052     Currency& operator/=(const int rhs);
00053 
00054     Currency operator+() const;
00055     Currency operator-() const;
00056 
00057     operator int() const;
00058     operator float() const;
00059     operator double() const;
00060 
00061     string toString() const;
00062 
00063     friend Currency operator-(const Currency& lhs, const Currency& rhs);
00064     friend Currency operator-(const Currency& lhs, float rhs);
00065     friend Currency operator-(const Currency& lhs, int rhs);
00066 
00067     friend Currency operator+(const Currency& lhs, const Currency& rhs);
00068     friend Currency operator+(const Currency& lhs, float rhs);
00069     friend Currency operator+(const Currency& lhs, int rhs);
00070 
00071     friend Currency operator*(const Currency& lhs, const Currency& rhs);
00072     friend Currency operator*(const Currency& lhs, float rhs);
00073     friend Currency operator*(const Currency& lhs, int rhs);
00074 
00075     friend Currency operator/(const Currency& lhs, const Currency& rhs);
00076     friend Currency operator/(const Currency& lhs, float rhs);
00077     friend Currency operator/(const Currency& lhs, int rhs);
00078 
00079     friend bool operator<(const Currency& lhs, const Currency& rhs);
00080     friend bool operator<(const Currency& lhs, float rhs);
00081     friend bool operator<(const Currency& lhs, int rhs);
00082 
00083     friend bool operator>(const Currency& lhs, const Currency& rhs);
00084     friend bool operator>(const Currency& lhs, float rhs);
00085     friend bool operator>(const Currency& lhs, int rhs);
00086 
00087     friend bool operator==(const Currency& lhs, const Currency& rhs);
00088     friend bool operator==(const Currency& lhs, float rhs);
00089     friend bool operator==(const Currency& lhs, int rhs);
00090 
00091     friend bool operator!=(const Currency& lhs, const Currency& rhs);
00092     friend bool operator!=(const Currency& lhs, float rhs);
00093     friend bool operator!=(const Currency& lhs, int rhs);
00094 
00095     friend bool operator<=(const Currency& lhs, const Currency& rhs);
00096     friend bool operator<=(const Currency& lhs, float rhs);
00097     friend bool operator<=(const Currency& lhs, int rhs);
00098 
00099     friend bool operator>=(const Currency& lhs, const Currency& rhs);
00100     friend bool operator>=(const Currency& lhs, float rhs);
00101     friend bool operator>=(const Currency& lhs, int rhs);
00102 
00103     friend ostream& operator<<(ostream& os, const Currency& rhs);
00104 
00105    //private:
00106      int value;
00107 };
00108 
00109 #endif