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Diffstat (limited to 'apps/examples/elf/tests/helloxx/hello++2.cpp')
-rw-r--r-- | apps/examples/elf/tests/helloxx/hello++2.cpp | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/apps/examples/elf/tests/helloxx/hello++2.cpp b/apps/examples/elf/tests/helloxx/hello++2.cpp new file mode 100644 index 000000000..f1268dda5 --- /dev/null +++ b/apps/examples/elf/tests/helloxx/hello++2.cpp @@ -0,0 +1,123 @@ +///////////////////////////////////////////////////////////////////////////// +// examples/elf/tests/helloxx/hello++2.c +// +// Copyright (C) 2012 Gregory Nutt. All rights reserved. +// Author: Gregory Nutt <gnutt@nuttx.org> +// +// 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; +} |