C++ Institute CPA-21-02 PDF Exam Questions:

What will the variable "age" be in class B?

class A {

int x;

protected:

int y;

public:

int age;

A () { age=5; };

};

class B : public A {

string name;

public:

B () { name="Bob"; };

void Print() {

cout << name << age;

}

};

What happens when you attempt to compile and run the following code?

#include

#include

using namespace std;

class complex{

double re, im;

public:

complex() : re(1),im(0.4) {}

complex operator?(complex &t);

void Print() { cout << re << " " << im; }

};

complex complex::operator? (complex &t){

complex temp;

temp.re = this?>re ? t.re;

temp.im = this?>im ? t.im;

return temp;

}

int main(){

complex c1,c2,c3;

c3 = c1 ? c2;

c3.Print();

}

What happens when you attempt to compile and run the following code?

#include

using namespace std;

class complex{

double re;

double im;

public:

complex() : re(0),im(0) {}

complex(double x) { re=x,im=x;};

complex(double x,double y) { re=x,im=y;}

void print() { cout << re << " " << im;}

};

int main(){

complex c1;

c1 = 3.0;

c1.print();

return 0;

}

What happens when you attempt to compile and run the following code?

#include

using namespace std;

void fun(int);

int main()

{

int a=0;

fun(a);

return 0;

}

void fun(int n)

{

if(n < 2)

{

fun(++n);

cout << n;

}

}

What happens when you attempt to compile and run the following code?

#include

using namespace std;

int s(int n);

int main()

{

int a;

a = 3;

cout << s(a);

return 0;

}

int s(int n)

{

if(n == 0) return 1;

return s(n?1)*n;

}