CodeStepByStep

Consider the following classes; assume that each is defined in its own file.

class Amazon : public Facebook {
public:
    virtual void b() {
        cout << "AM B" << endl;
        a();
    }

    virtual void c() {
        cout << "AM C" << endl;
        Facebook::c();
    }

    virtual void d() {
        cout << "AM D" << endl;
        c();
    }
};

class Microsoft : public Google {
public:
    virtual void b() {
        cout << "MS B" << endl;
        a();
    }

    virtual void c() {
        cout << "MS C" << endl;
        Google::c();
    }
};

class Google {
public:
    virtual void a() {
        c();
        cout << "G A" << endl;
    }

    virtual void c() {
        cout << "G C" << endl;
    }
};

class Facebook : public Google {
public:
    virtual void a() {
        cout << "FB A" << endl;
    }

    virtual void c() {
        cout << "FB C" << endl;
    }
};

Now assume that the following variables are defined:

Google*   var1 = new Facebook();
Facebook* var2 = new Amazon();
Google*   var3 = new Amazon();
Google*   var4 = new Microsoft();

In the table below, indicate in the right-hand column the output produced by the statement in the left-hand column. If the statement produces more than one line of output, indicate the line breaks with slashes as in "x / y / z" to indicate three lines of output with "x" followed by "y" followed by "z". If the statement does not compile, write "COMPILER ERROR". If a statement would crash at runtime or cause unpredictable behavior, write "CRASH".