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我在C++中有一个“未明确提及”的问题。

这里,我有:

#include "HelloWorldAgent/helloworldagent.hh"

int main()
{
   HelloWorldAgent agent;
   agent.run();
}

在另一个C++档案中,下一个编码是:

#ifndef _HELLOWORLDAGENT_HH_
#define _HELLOWORLDAGENT_HH_

#include "../../HumanoidAgent/humanoidagent.hh"

/**
 *  A friendly robot
 */
class HelloWorldAgent : public bats::HumanoidAgent
{
/**
 * Initialize agent
*
* Called a single time when starting up the agent. Put all your initialization stuff  
here.
*/
virtual void init();

/**
* Think cycle
*
* Called at each cycle after a message from the server is received and parsed. 
Put all your thinking and acting stuff here.
*/
virtual void think();

public:

/**
*  The Constructor
*
*  Sets this agent s teamname to "Hello". Consider putting initialization stuff in 
init() instead of here.
*/
HelloWorldAgent()
: HumanoidAgent(std::string("Hello"))
{
}

};

#endif

我试图将其编成第2版。

g++-I/usr/include/eigen - I /usr/include/sigc++-2.0 - I /usr/lib/sigc++-2.0/include helloworld.cc

给我下一个错误:

In file included from /usr/lib/gcc/i486-slackware-linux/4.5.2/../../../../include/c++/4.5.2/ext/hash_map:60:0, from HelloWorldAgent/../../HumanoidAgent/../WorldModel/../Hashclasses/hashclasses.hh:25, from HelloWorldAgent/../../HumanoidAgent/../WorldModel/worldmodel.hh:54, from HelloWorldAgent/../../HumanoidAgent/humanoidagent.hh:46, from HelloWorldAgent/helloworldagent.hh:44, from helloworld.cc:1: /usr/lib/gcc/i486-slackware-linux/4.5.2/../../../../include/c++/4.5.2/backward/backward_warning.h:28:2: warning: #warning This file includes at least one deprecated or antiquated header which may be removed without further notice at a future date. Please use a non-deprecated interface with equivalent functionality instead. For a listing of replacement headers and interfaces, consult the file backward_warning.h. To disable this warning use -Wno-deprecated. /tmp/cc1cjIEs.o: In function main : helloworld.cc:(.text+0x29): undefined reference tobats::HumanoidAgent::run() /tmp/cc1cjIEs.o: In function HelloWorldAgent::HelloWorldAgent() : helloworld.cc:(.text._ZN15HelloWorldAgentC2Ev[_ZN15HelloWorldAgentC5Ev]+0xfd): undefined reference tovtable for HelloWorldAgent /tmp/cc1cjIEs.o: In function HelloWorldAgent::~HelloWorldAgent() : helloworld.cc:(.text._ZN15HelloWorldAgentD2Ev[_ZN15HelloWorldAgentD5Ev]+0xb): undefined reference tovtable for HelloWorldAgent collect2: ld returned 1 exit status

我不知道可以做些什么,也许会说错了。 任何想法?

Thanks in advance. =

PS: No, it is not homework, it is just for fun =