c ++ - appel d'une méthode virtuelle sous-classé d'une méthode de classe de base - Stack Overflow

class A
{
public:
    virtual void
        doSomething(void)
    {}

    void
        doStuff(void)
    {
        doSomething();
    }
};

class B : public A
{
public:
    void
        doSomething(void)
    {
        // do some stuff here
    }
};

B * b = new B;
b->doStuff();

It gives me Segmentation fault. What am I doing wrong? It should work well in my opinion!

As far as I can see, you're not doing any polymorphism in the code bellow the class definition.

b->doStuff() should call the method of B class. If you want to inside B call A-> doSomething you can use A:: doSomething

After I corrected the syntax errors and added a main() function, it compiled and executed for me with no problems. Try posting the REAL code that causes the problem, and rethink your code formatting.

You should not have the : after class A and public A...

class A
{
public:
    virtual void
        doSomething(void)
    {}

    void
        doStuff(void)
    {
        doSomething();
    }
};

class B : public A
{
public:
    void
        doSomething(void)
    {
        // do some stuff here
    }
};

B * b = new B;
b->doStuff();

It gives me Segmentation fault. What am I doing wrong? It should work well in my opinion!

As far as I can see, you're not doing any polymorphism in the code bellow the class definition.

b->doStuff() should call the method of B class. If you want to inside B call A-> doSomething you can use A:: doSomething

After I corrected the syntax errors and added a main() function, it compiled and executed for me with no problems. Try posting the REAL code that causes the problem, and rethink your code formatting.

You should not have the : after class A and public A...

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