Discussion :

[DeltaMan]

Bonjour a tous,

Je suis entrain de reviser avec le livre de Claude Delannoy, Exercices en C++ , mais meme avec le code source de l'auteur telecharge sur son site j'ai le message d'erreur ci dessous avec Visual C++ 6.

D'avance merci pour votre aide.

Code :

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#include <iostream>
 
using namespace std;
 
class point
{ int x, y;
  public :
  point (int abs=0, int ord=0)
  {x=abs; y=ord;}
 
  int abscisse () {return x;}
  friend ostream & operator << (ostream & , point );
  friend istream & operator >> (istream & , point & );
};
 
ostream & operator << (ostream & sortie, point p)
{sortie << "<" << p.x << ";" << p.y << ">";
 return sortie;
}
 
istream & operator >> (istream & entree, point & p)
{int ok=1;
 char c='\0';
 int x, y;
 
 entree >> c;
 if (c!='<') ok=0;
	else
	{entree >> x >> c;
			if (c!=',') ok=0;
			    else 
				{entree >> y >> c;
				if (c!='>') ok=0;
				}
	}
 
	if(ok) {p.x = x; p.y = y;}
	   else entree.clear (ios::badbit | entree.rdstate ());
 
  return entree;
}
 
 
void main()
{
	char ligne [121];
	point a(2,3), b;
	cout << "point a : " << a << " point b: " << b << "\n";
	do
	{cout << "donnez un point : ";
	 if(cin>>a) cout << "merci pour le point : " << a << "\n";
	 else {cout << "** information incorrecte \n";
		   cin.clear();
		   cin.getline (ligne, 120, '\n');
		   }
	}
while (a.abscisse ());
}

Message d'erreur obtenu:

--------------------Configuration: ex68 - Win32 Debug--------------------
Compiling...
ex68.cpp
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(18) : error C2248: 'x' : cannot access private member declared in class 'point'
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(7) : see declaration of 'x'
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(18) : error C2248: 'y' : cannot access private member declared in class 'point'
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(7) : see declaration of 'y'
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(38) : error C2248: 'x' : cannot access private member declared in class 'point'
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(7) : see declaration of 'x'
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(38) : error C2248: 'y' : cannot access private member declared in class 'point'
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(7) : see declaration of 'y'
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(49) : error C2593: 'operator <<' is ambiguous
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(52) : error C2593: 'operator >>' is ambiguous
C:\Program Files\Microsoft Visual Studio\MyProjects\ex68.cpp(52) : error C2593: 'operator <<' is ambiguous
Error executing cl.exe.

ex68.obj - 7 error(s), 0 warning(s)

[FunK92]

Effectivement c'est assez étrange. Chez moi sa compile sous g++ :/