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Alex Rivera
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What is the purpose of using the reserved word virtual in front of functions? If I want a child class to override a parent function, I just declare the same function such as void draw(){} . class Parent { public: void say() { std::cout << "1"; } }; class Child : public Parent { public: void say() { std::cout << "2"; } }; int main() { Child* a = new Child(); a->say(); return 0; } The output is 2. So again, why would the reserved word virtual be necessary in the header of say() ?
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