c++ - Error: pure virtual method called - terminate called without an active exception - Aborted

Question

In my A.h file:

class A{
  private:
    unsigned short PC;
  public:
    A():PC(0){}
    virtual ~A(){}
    virtual void execute(unsigned short PC)=0;
};

In my B.h file:

class B:public A{
  private: 
      int status;bool exe;
  public:
    B:status(0),exe(false){}
    virtual B(){}
    void execute (unsigned short PC);
};

In my B.cpp file:

#include <iostream>
#include "B.h"

void B::execute (unsigned short PC){
  cout << "Run";
}

In my Functions.h file :

#include "A.h"

class Functions{
  public: 
    int status;
    Functions():status(1){} // this is a constructer
    void run(A *a);
};

IN my Functions.cpp file:

#include "Functions.h"
#include "A.h"
#include "B.h"

using namespace std;
void Functions::run (A *a){
  a->execute();
}

In my Main.cpp file:

#include "A.h" 
#include "B.h" 

int main(int args, char**argv){
  A *a;
  B b;
  a = &b;
  Functions f;
  f.run(a);
  return 1;
}

When I run , it has some error: pure virtual method called - terminate called without an active exception - Aborted Can anybody where did I misunderstand? Thank you

Answer 1

Usually you get this error when call your virtual function from constructor or destructor. Check that that is not the case.

(I assume that your demo code is not complete).