Я постоянно получаю неоднозначную ошибку перегрузки, независимо от того, что я делаю ....
вот мой код
Код COMPLEX.cpp
template<class C> class complex
{
C real,imag;
public:
//constructors
complex(C real=0,C imag=0)
{
complex::real=real;
complex::imag=imag;
}
complex(const complex& cmplx)
{
real=cmplx.real;
imag=cmplx.imag;
}
//functions available
complex<C> operator+(const complex&);
complex<C> operator+(double);
void operator=(const complex&);
//friend functions available
template<class F> friend complex<F> operator+(double,const complex<F>&);
template<class F> friend istream& operator>>(istream&,const complex<F>&);
template<class F> friend ostream& operator<<(ostream&,const complex<F>&);
};
ОПЕРАТОР >> реализация
template<class F> istream& operator>>(istream& cin,const complex<F>& cmplx)
{
cout<<"\nenter real part followed by imaginary part : ";
cin>>cmplx.real>>cmplx.imag;
return cin;
}
Основной метод
int main(void)
{
complex<int> C1;
complex<int> C2;
complex<int> C3;
cin>>C1>>C2>>C3;
cout<<C1<<C2<<C3;
C1=C1+3;
C2=2+C2;
C3=C1+C2;
cout<<C1<<C2<<C3;
complex<int> C4(C3);
cout<<C4;
return 0;
}
ОШИБКА КОМПИЛЕРА
COMPLEX.cpp: In function ‘std::istream& operator>>(std::istream&, const complex<C>&) [with F = int, std::istream = std::basic_istream<char>]’:
COMPLEX.cpp:91:7: instantiated from here
COMPLEX.cpp:75:2: error: ambiguous overload for ‘operator>>’ in ‘cin >> cmplx.complex<int>::real’
COMPLEX.cpp:75:2: note: candidates are:
/usr/include/c++/4.6/istream:122:7: note: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char, _Traits = std::char_traits<char>, std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
/usr/include/c++/4.6/istream:122:7: note: no known conversion for argument 1 from ‘const int’ to ‘std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&) {aka std::basic_istream<char>& (*)(std::basic_istream<char>&)}’
/usr/include/c++/4.6/istream:126:7: note: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char, _Traits = std::char_traits<char>, std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>, std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios<char>] <near match>
/usr/include/c++/4.6/istream:126:7: note: no known conversion for argument 1 from ‘const int’ to ‘std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&) {aka std::basic_ios<char>& (*)(std::basic_ios<char>&)}’
/usr/include/c++/4.6/istream:133:7: note: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char, _Traits = std::char_traits<char>, std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
/usr/include/c++/4.6/istream:133:7: note: no known conversion for argument 1 from ‘const int’ to ‘std::ios_base& (*)(std::ios_base&)’
/usr/include/c++/4.6/istream:241:7: note: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char, _Traits = std::char_traits<char>, std::basic_istream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf<char>] <near match>
/usr/include/c++/4.6/istream:241:7: note: no known conversion for argument 1 from ‘const int’ to ‘std::basic_istream<char>::__streambuf_type* {aka std::basic_streambuf<char>*}’
до этого я написал MATRIX.cpp, и перегрузка istream там прекрасно работает, хотя она почти такая же, как здесь ....