Help
What i have here is a currency class which is a sub class. I have hit a wall and do not know how to do the following empty functions and constructors. Please help. thanks
Code:
Currency::Currency():_dollars(0),_cents(0){}
Currency::Currency(const Currency& curr)
{
_dollars = curr._dollars;
_cents = curr._cents;
}
Currency::Currency(int dollars, int cents):_dollars(dollars),_cents(cents){}
Currency::Currency(float curr)
{
}
Currency::Currency(const string& curr)
{
}
int Currency::getDollars() const
{
return _dollars;
}
int Currency::getCents() const
{
return _cents;
}
void Currency::setDollars(int dollars)
{
this->_dollars = dollars;
}
void Currency::setCents(int cents)
{
this->_cents = cents;
}
// This function converts the internal currency representation to a floating point number
float Currency::toFloat() const
{
return 0;
}
string Currency::toString() const
{
Currency curr;
string returning_string;
string assignStringDollars, assignStringCents ;
ostringstream dollarStream, centStream;
dollarStream << curr.getDollars();
centStream << curr.getCents();
assignStringDollars = dollarStream.str();
assignStringCents = centStream.str();
returning_string = assignStringDollars + "." + assignStringCents;
return returning_string;
}
//This function converts a floating point number to the internal representation of the currency class
void Currency::fromFloat(float curr)
{
}
int Currency::fromString(const string& curr)
{
Tokeniser tok(curr, ".");
char *garbage;
_dollars = strtol(tok.nextToken().c_str(), &garbage, 10);
if (garbage != NULL && strlen(garbage) > 0)
{
return -1;
}
_cents = strtol(tok.nextToken().c_str(), &garbage, 10);
if (garbage != NULL && strlen(garbage) > 0)
{
return -1;
}
return 0;
}
Currency& Currency::operator =(const Currency& obj)
{
if (*this != obj)
{
_dollars = obj.getDollars();
_cents = obj.getCents();
}
return *this;
}
bool Currency::operator <(const Currency& obj) const
{
if (_dollars < obj.getDollars())
{
return true;
}
if (_dollars > obj.getDollars())
{
return false;
}
if (_cents < obj.getCents())
{
return true;
}
return false;
}
bool Currency::operator ==(const Currency& obj) const
{
if (_dollars == obj.getDollars() && _cents == obj.getCents())
{
return true;
}
return false;
}
bool Currency::operator !=(const Currency& obj) const
{
return !(*this == obj);
}
ostream& operator <<(ostream& out, const Currency& obj)
{
out << obj.getDollars() << "." << obj.getCents();
return out;
}
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