Pass the C++ Institute C++ Certified Professional Programmer CPA-21-02 Questions and answers with ExamsMirror

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

#include

using namespace std;

int getValue();

int main()

{

const int x = getValue();

cout<

return 0;

}

int getValue()

{

return 5;

}

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

#include

using namespace std;

namespace myNamespace1

{

int x = 5;

int y = 10;

}

namespace myNamespace2

{

float x = 3.14;

float y = 1.5;

}

int main () {

{

using namespace myNamespace1;

cout << x << " ";

}{

using namespace myNamespace2;

cout << y;

}

return 0;

}

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 is the output of the program?

#include

#include

using namespace std;

int main()

{

string s1="Wo";

string s2;

s2 = s1;

string s3;

s3 = s2.append("rldHello");

cout << s3;

return( 0 );

}

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

#include

#include

#include

using namespace std;

int main(void)

{

string s;

s = "Test";

s.resize (s.size() ? 1);

cout<

return 0;

}

What is the output of the program if characters 't', 'e', 's' and 't' enter are supplied as input?

#include

#include

using namespace std;

int main()

{

string s;

getline( cin, s );

cout << s << " " << s.length();

return( 0 );

}

What is the output of the program?

#include

#include

using namespace std;

int main()

{

string s1="Hello";

string s2="World";

s1+=s2;

cout << s1;

return( 0 );

}

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 if character 3 is entered as input?

#include

using namespace std;

class A {

public:

int i;

};

int main () {

int c;

A obj;

obj.i = 5;

cin >> c;

try

{

switch (c)

{

case A. throw 20;

case B. throw 5.2f;

case C. throw obj;

default: cout<<"No exception";

}

}

catch (int e)

{ cout << "int exception. Exception Nr. " << e; }

catch (A e)

{ cout << "object exception. Exception Nr. " << e.i; }

catch (...)

{ cout << "An exception occurred."; }

return 0;

}

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

#include

#include

using namespace std;

class A {

public:

A() { cout << "A no parameters";}

A(string s) { cout << "A string parameter";}

A(A &a) { cout << "A object A parameter";}

};

class B : public A {

public:

B() { cout << "B no parameters";}

B(string s) { cout << "B string parameter";}

};

int main () {

A a2("Test");

B b1("Alan");

B b2(b1);

return 0;

}