vchain.cpp

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C++ 代码 · 共 76 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
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****************************************************************************/


#include <iostream.h>

struct V {
    int v;
};
struct V1 : virtual V {
    int v1;
};
struct V2 : virtual V1 {
    int v2;
};
struct V3 : virtual V2 {
    int v3;
};
struct V4 : virtual V3 {
    int v4;
};
struct V5 : virtual V4 {
    int v5;
};
struct V6 : virtual V5 {
    int v6;
};
struct V7 : virtual V6 {
    int v7;
};
struct V8 : virtual V7 {
    int v8;
};
struct V9 : virtual V8 {
    int v9;
};
struct V10 : virtual V9 {
    int v10;
};

void main()
{
    cout << "10 layers of virtual inheritance costs "
         << sizeof( V10 )
         << " bytes"
         << endl;
}