I get the following error(marked in the code):
error C2662: 'species' : cannot convert 'this' pointer from 'const class Duck' to 'class Duck &'
Conversion loses qualifiers
Code:#include<iostream> using namespace std; class Duck { public: virtual void species() = 0; }; class Mallard : public Duck { public: void species() { cout<<"Mallard"<<endl; } }; void operateDuck(const Duck* pDuck) { pDuck->species(); } int main() { Mallard myDuck; operateDuck(&myDuck); cout<<endl; return 0; }