一个包含3个对象的类，这些对象具有彼此的指针，以及一个初始化列表以将引用传递给这些对象。 错误

Question

Agent.h : //#include "Genetics.h" "Sensors.h" "Effectors.h"

class C_Agent
{
public:

    C_Agent();

    C_Genome Genome;
    C_Sensors Sensors;
    C_Effectors Effectors;
    s_agentParameters parameters; 
}; 

Agent.cpp : //#include "Agent.h"

C_Agent::C_Agent() 
: parameters(), Sensors(& parameters), Effectors(& parameters),
  Genome(& Sensors, & Effectors)
{ 
    //setup parameters
    Effectors.p_Genome = & Genome; 
}

Sensors.h : //#include "Genetics.h"

class C_Sensors
{
  public:
    s_agentParameters * p_parameters;
    C_sensors(s_agentParameters * p_parametersRef);
};

Sensors.cpp : //#include "Sensors.h"

C_Sensors::C_Sensors(s_agentParameters * p_parametersRef)
: p_parameters(p_parametersRef) {}

Effectors.h //#include "Genetics.h"

class C_Effectors
{
public:
    s_agentParameters * p_parameters;
    C_Genome * p_Genome;                               //forbids declaration w/ no type
    C_Effectors(s_agentParameters * p_parametersRef);
};

Effectors.cpp : //#include "Effectors.h"

C_Effectors::C_Effectors(s_agentParameters * p_parametersRef)
: p_parameters(p_parametersRef) {}

Genetics.h : //#include "Sensors.h" "Effectors.h"

class C_Genome
{
public:
    C_Sensors * p_Sensors;                             //forbids declaration w/ no type
    C_Effectors * p_Effectors;                         //forbids declaration w/ no type
    C_Genome(C_Sensors * p_C_SensorsRef, C_Effectors * p_C_EffectorsRef);
};

Genetics.cpp : //#include "Genetics.h" "Sensors.h" "Effectors.h"

C_Genome::C_Genome(C_Sensors * p_C_SensorsRef, C_Effectors * p_C_EffectorsRef)
: p_Sensors (p_C_SensorsRef),  p_Effectors (p_C_EffectorsRef) {}

When I try to compile this, I get 6 errors of "'class_name' does not name a type" and 6 errors of " ISO c++ forbids declaration of 'class_name' with no type". I also have code in main that attempts to initialize some C_Agent objects.

Answer 1

如果具有循环依赖关系，则需要在某处至少声明一个类名。