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/////////////////////////////////////////////////////////////////////////////
// examples/nxflat/tests/hello++/hello++2.c
//
// Copyright (C) 2009 Gregory Nutt. All rights reserved.
// Author: Gregory Nutt <spudmonkey@racsa.co.cr>
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in
// the documentation and/or other materials provided with the
// distribution.
// 3. Neither the name NuttX nor the names of its contributors may be
// used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
/////////////////////////////////////////////////////////////////////////////
//
// This is an another trivial version of "Hello, World" design. It illustrates
//
// - Building a C++ program to use the C library
// - Basic class creation
// - NO Streams
// - NO Static constructor and destructors
//
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
// Included Files
/////////////////////////////////////////////////////////////////////////////
#include <cstdio>
/////////////////////////////////////////////////////////////////////////////
// Classes
/////////////////////////////////////////////////////////////////////////////
class CThingSayer
{
const char *szWhatToSay;
public:
CThingSayer(void)
{
printf("CThingSayer::CThingSayer: I am!\n");
szWhatToSay = (const char*)NULL;
}
~CThingSayer(void)
{
printf("CThingSayer::~CThingSayer: I cease to be\n");
if (szWhatToSay)
{
printf("CThingSayer::~CThingSayer: I will never say '%s' again\n",
szWhatToSay);
}
szWhatToSay = (const char*)NULL;
}
void Initialize(const char *czSayThis)
{
printf("CThingSayer::Initialize: When told, I will say '%s'\n",
czSayThis);
szWhatToSay = czSayThis;
}
void SayThing(void)
{
printf("CThingSayer::SayThing: I am now saying '%s'\n", szWhatToSay);
}
};
/////////////////////////////////////////////////////////////////////////////
// Public Functions
/////////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv)
{
CThingSayer *MyThingSayer;
printf("main: Started. Creating MyThingSayer\n");
// Create an instance of the CThingSayer class
// We should see the message from constructor, CThingSayer::CThingSayer(),
MyThingSayer = new CThingSayer;
printf("main: Created MyThingSayer=0x%08lx\n", (long)MyThingSayer);
// Tell MyThingSayer that "Hello, World!" is the string to be said
printf("main: Calling MyThingSayer->Initialize\n");;
MyThingSayer->Initialize("Hello, World!");
// Tell MyThingSayer to say the thing we told it to say
printf("main: Calling MyThingSayer->SayThing\n");;
MyThingSayer->SayThing();
// We should see the message from the destructor,
// CThingSayer::~CThingSayer(), AFTER we see the following
printf("main: Destroying MyThingSayer\n");
delete MyThingSayer;
printf("main: Returning\n");;
return 0;
}
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