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#include <iostream>
 
using namespace std;
 
class AbsBase
{
    virtual void init() = 0;
    virtual void work() = 0;
};
 
class AbsInit : public virtual AbsBase
{
public:
    int n;
    AbsInit(int x)
    {
        n = x;
    }
    void init() {  }
};
 
class AbsWork : public virtual AbsBase
{
    void work() {  }
};
 
class NotAbsTotal : public AbsInit, public AbsWork
{
	public: 
    int n;
    NotAbsTotal(int x){
        n = x;
    }
 
};    // Nothing, both should be defined
 
 
int main() {
  NotAbsTotal foo();
  cout << foo.n << endl;
 
}
 

prog.cpp: In constructor 'NotAbsTotal::NotAbsTotal(int)':
prog.cpp:31:23: error: no matching function for call to 'AbsInit::AbsInit()'
     NotAbsTotal(int x){
                       ^
prog.cpp:15:5: note: candidate: AbsInit::AbsInit(int)
     AbsInit(int x)
     ^
prog.cpp:15:5: note:   candidate expects 1 argument, 0 provided
prog.cpp:11:7: note: candidate: AbsInit::AbsInit(const AbsInit&)
 class AbsInit : public virtual AbsBase
       ^
prog.cpp:11:7: note:   candidate expects 1 argument, 0 provided
prog.cpp:11:7: note: candidate: AbsInit::AbsInit(AbsInit&&)
prog.cpp:11:7: note:   candidate expects 1 argument, 0 provided
prog.cpp: In function 'int main()':
prog.cpp:40:15: error: request for member 'n' in 'foo', which is of non-class type 'NotAbsTotal()'
   cout << foo.n << endl;
               ^

Standard output is empty