Aquí está el error:G ++ error del compilador - método sintetizado por primera vez requiere aquí
In file included from /usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/ios:39,
from /usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/ostream:40,
from /usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/iostream:40,
from date.h:15,
from date.cpp:13:
/usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/bits/ios_base.h: In copy constructor ‘std::basic_ios<char, std::char_traits<char> >::basic_ios(const std::basic_ios<char, std::char_traits<char> >&)’:
/usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/bits/ios_base.h:790: error: ‘std::ios_base::ios_base(const std::ios_base&)’ is private
/usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/iosfwd:47: error: within this context
/usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/iosfwd: In copy constructor ‘std::basic_ostream<char, std::char_traits<char> >::basic_ostream(const std::basic_ostream<char, std::char_traits<char> >&)’:
/usr/lib/gcc/x86_64-redhat-linux/4.4.6/../../../../include/c++/4.4.6/iosfwd:56: note: synthesized method ‘std::basic_ios<char, std::char_traits<char> >::basic_ios(const std::basic_ios<char, std::char_traits<char> >&)’ first required here
date.cpp: In function ‘std::ostream operator<<(std::ostream&, Date&)’:
date.cpp:389: note: synthesized method ‘std::basic_ostream<char, std::char_traits<char> >::basic_ostream(const std::basic_ostream<char, std::char_traits<char> >&)’ first required here
make: *** [date.o] Error 1
creo que puede tener que ver con la forma en mi cabecera y el archivo de origen están recopilando juntos así que aquí está el código para que:
Cabecera:
#ifndef DATE_H
#define DATE_H
#include <iostream>
using namespace std;
// basic but lengthy class code
#endif
Fuente:
// #include <iostream> // tried compiling with and without this, but no change
#include <cassert>
#include <cstdlib>
#include "date.h" // this is (date.cpp:13)
// I have tried using namespace std, just to see what would happen but nothing changed
Por último, aquí es la función que el compilador se refiere a (date.cpp: 389):
ostream operator <<(ostream &out, const Date &date)
{
// day
out << date.day;
switch (date.day)
{
case 1:
case 21:
case 31:
out << "st";
break;
case 2:
case 22:
out << "nd";
break;
case 3:
case 23:
out << "rd";
break;
default:
out << "th";
break;
}
// month
const char MONTHS[12][10] =
{ "January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"};
out << " of " << MONTHS[date.month - 1] << ", ";
// year
out << date.year;
return out;
}
estoy completamente desconcertado aquí. He buscado en Google durante la última hora, pero no puedo encontrar nada que resuelva mi problema. Gracias por cualquier ayuda de antemano!
Tenga en cuenta que no debe haber un 'using namespace std;' en un encabezado. –
Consulte esta pregunta para obtener una explicación de por qué ... http://stackoverflow.com/questions/14575799/using-namespace-std-in-a-header-file – Mawg