Dear all,
Sorry for i did not paste original propreity codes
See below the fake codes for what I cannot understand.
===============================================
lass A
{
public:
virtual int xfunc() = 0 ;
virtual int yfunc() = 0 ;
};
class C: public A
{
int m_a;
int m_b;
public:
C();
~C();
int xfunc();
int yfunc();
};
the functions' inplementation is as
C::xfunc() {
........
}
================================================== ======
I am using the class C as my programming interface.
I am curious about the function of line "virtual int xfunc() = 0 ;"
I try read my c++ book and cannot got answer to this.
Thank you in advance
Bill Zhao