Article View: es.comp.lenguajes.c++
Article #95Re: Crear clase dígito.
From: Pascal J. Bourguignon
Date: Fri, 02 May 2008 15:16
Date: Fri, 02 May 2008 15:16
27 lines
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2232 bytes
"R.G.A.M." <rgam1989@yahoo.com.ar> writes:
> Me gustar�a saber c�mo puedo dise�ar un objeto de la misma naturaleza
> que la clase "int", salvo que s�lo abarque los n�meros del 0 al 9,
> para poder trabajar �nicamente con d�gitos, sin derrochar memoria.
>
> Desde ya, muchas gracias.
Tipos enteros y objetos no son de la misma naturaleza en C++.
No se puede escribir: 42.print();
typedef unsigned char digit; // misma naturaleza
o bien:
class digit { // un objeto
protected: unsigned char value;
digit(unsigned char aValue):value(aValue){assert((0<=aValue)&(aValue<=9));}
inline int getValue(void)const{return value;}
const digit& operator+(const digit& other){return(digit((value+other.getValue())%10));}
// ...
};
--
__Pascal Bourguignon__
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Subject: Re: Crear clase dígito.
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From: pjb@informatimago.com (Pascal J. Bourguignon)
Date: Fri, 02 May 2008 17:16:26 +0200
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