Hi I'm doing an assignment on Rational Number calculations.
I'm getting some compiling errors which I don't know how to fix.
Here is the error message and the code is beneath the error message.
I would really appreciate if someone could read over this and see if you know whats wrong.
Thanks
Gudmundur.
1>------ Build started: Project: Dæmatími 7, Configuration: Debug Win32 ------
1> Assignment 7.cpp
1>c:\program files\microsoft visual studio 10.0\vc\include\istream(860): error C2248: 'std::basic_ios<_Elem,_Traits>::basic_ios' : cannot access private member declared in class 'std::basic_ios<_Elem,_Traits>'
1> with
1> [
1> _Elem=char,
1> _Traits=std::char_traits<char>
1> ]
1> c:\program files\microsoft visual studio 10.0\vc\include\ios(176) : see declaration of 'std::basic_ios<_Elem,_Traits>::basic_ios'
1> with
1> [
1> _Elem=char,
1> _Traits=std::char_traits<char>
1> ]
1> This diagnostic occurred in the compiler generated function 'std::basic_istream<_Elem,_Traits>::basic_istream(const std::basic_istream<_Elem,_Traits> &)'
1> with
1> [
1> _Elem=char,
1> _Traits=std::char_traits<char>
1> ]
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
#include <iostream>
#include <string>
#include <istream>
#include <fstream>
using namespace std;
class RationalNumber
{
private:
int numberator;
int denominator;
public:
RationalNumber();
RationalNumber(int a);
RationalNumber(int a, int b);
RationalNumber add(RationalNumber rnum);
RationalNumber sub(RationalNumber rnum);
RationalNumber mul(RationalNumber rnum);
RationalNumber div(RationalNumber rnum);
RationalNumber neg();
int less(RationalNumber rnum);
int getNumberator();
int getDenominator();
void set(int numer, int denomi);
void input(istream in);
};
void writeOutput(string s, RationalNumber rnum, ostream &ostr);
void openFiles(ifstream& fin, ofstream& fout);
void closeFiles(ifstream& fin, ofstream& fout);
int main()
{
RationalNumber rnum1(2,3), rnum2(1,2), rnum3(2);
RationalNumber rnum4, rnum5, rnum6, result;
ifstream fin;
ofstream fout;
openFiles(fin, fout);
writeOutput("First rational number: ", rnum1, cout);
writeOutput("Second rational number: ", rnum2, cout);
result = rnum1.add(rnum2);
writeOutput("First + second: ", result, cout);
result = rnum1.sub(rnum2);
writeOutput("First - second: ", result, cout);
result = rnum1.mul(rnum2);
writeOutput("First * second: ", result, cout);
result = rnum1.div(rnum2);
writeOutput("First / second: ", result, cout);
writeOutput("Third rational number: ", rnum3, cout);
writeOutput("Fourth rational number: ", rnum4, cout);
cout << "Input the integer numbers respresenting a rational number: ";
rnum3.input(cin);
writeOutput("Third rational number is now: ", rnum3, cout);
writeOutput("Third rational number is now: ", rnum3, fout);
cout << "Now reading two rational numbers from the input file ..." << endl;
rnum4.input(fin);
rnum5.input(fin);
writeOutput("Fourth rational number: ", rnum4, cout);
writeOutput("Fifth rational number: ", rnum5, cout);
if (rnum4.less(rnum5))
cout << "The fourth is less than the fifth" << endl;
else
cout << "The fourth is greater or equal to the fifth" << endl;
result = rnum5.neg();
writeOutput("Fifth rational number negated: ", result, cout);
writeOutput("Fifth rational number negated: ", result, fout);
cout << "Now setting the sixth rational number ..." << endl;
rnum6.set(4,8);
writeOutput("Sixth rational number is: ", rnum6, cout);
cout << "The numerator of the sixth rational number is: " << rnum6.getNumberator() <<
endl;
closeFiles(fin,fout);
}
RationalNumber::RationalNumber()
{
this->numberator = 0;
this->denominator = 0;
}
RationalNumber::RationalNumber(int a)
{
this->numberator = a;
this->denominator = 1;
}
RationalNumber::RationalNumber(int a, int b)
{
this->numberator = a;
this->denominator = b;
}
int RationalNumber::getNumberator()
{
return this->numberator;
}
int RationalNumber::getDenominator()
{
return this->denominator;
}
void RationalNumber::set(int numer, int denomi)
{
this->numberator = numer;
this->denominator = denomi;
}
RationalNumber RationalNumber::add(RationalNumber rnum)
{
RationalNumber temp;
temp.set(this->numberator * rnum.getDenominator() + this->denominator * rnum.getNumberator(),
this->denominator * rnum.getDenominator());
return temp;
}
RationalNumber RationalNumber::sub(RationalNumber rnum)
{
RationalNumber temp;
temp.set(this->numberator * rnum.getDenominator() - this->denominator * rnum.getNumberator(),
this->denominator * rnum.getDenominator());
return temp;
}
RationalNumber RationalNumber::mul(RationalNumber rnum)
{
RationalNumber temp;
temp.set(this->numberator * rnum.getDenominator(),
this->denominator * rnum.getDenominator());
return temp;
}
RationalNumber RationalNumber::div(RationalNumber rnum)
{
RationalNumber temp;
temp.set(this->numberator * rnum.getDenominator(),
rnum.getNumberator() * this->denominator);
return temp;
}
RationalNumber RationalNumber::neg()
{
RationalNumber temp;
temp.set(this->numberator - this->numberator - this->numberator,
this->denominator - this->denominator - this->denominator);
return temp;
}
int RationalNumber::less(RationalNumber a)
{
RationalNumber temp;
}
void RationalNumber::input(istream in)
{
int a, b;
in >> a;
in >> b;
this->numberator = a;
this->denominator = b;
}
void openFiles(ifstream& fin, ofstream& fout)
{
fin.open("input.dat");
fout.open("output.dat");
}
void closeFiles(ifstream& fin, ofstream& fout)
{
fin.close();
fout.close();
}
void writeOutput(string s, RationalNumber rnum, ostream &ostr)
{
ostr << s << " " << rnum.getNumberator() << "/" << rnum.getDenominator() << endl;
}