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polymorphismMystery11

Language/Type: C++ inheritance polymorphism

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

class Becca : public Arie {
public:
    virtual void m2() {
        cout << "B2 ";
    }

    virtual void m3() {
        cout << "B3 ";
        Arie::m2();
    }
};

class Arie {
public:
    virtual void m1() {
        cout << "A1 ";
        m2();
    }

    virtual void m2() {
        cout << "A2 ";
    }
};

class JuanPablo :
           public Lauren {
public:
    virtual void m2() {
        cout << "JP2 ";
        Becca::m2();
    }
};

class Lauren : public Becca {
public:
    virtual void m1() {
        cout << "L1 ";
        Arie::m1();
    }

    virtual void m4() {
        m2();
        cout << "L4 ";
    }
};

Now assume that the following variables are defined: 

Arie*  var1 = new Becca();
Becca* var2 = new Lauren();
Arie*  var3 = new JuanPablo();

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".

var1->m1();
var1->m3();
var2->m2();
var2->m3();
var2->m4();
var3->m2();
var3->m4();
((Becca*) var1)->m3();
((Lauren*) var1)->m4();
((Becca*) var1)->m4();
((Arie*) var2)->m3();
((Lauren*) var2)->m4();
((Lauren*) var3)->m4();

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