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 );

}

A. It prints: HelloWorld

B. It prints: Hello

C. It prints: World

D. It prints: HelWorld

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;

}

A. It prints: 4

B. It prints: 6

C. It prints: 3

D. It prints: 0

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

#include

using namespace std;

int main(){

int i = 1;

for(i=10; i>-1; i/=2) {

if(!i)

break;

}

cout << i;

return 0;

}

A. It prints: 0

B. It prints: 1

C. It prints: -1

D. Compilation error

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

#include

using namespace std;

class A {

public:

int x;

};

class B : public A {

public:

B() { x=1;}

B(int x) {this?>x = x;}

};

int main () {

B c1;

B c2(10);

cout << c1.x;

cout << c2.x;

return 0;

}

A. It prints: 010

B. It prints: 110

C. It prints: 00

D. It prints: 1

What is the output of the program?

#include

using namespace std;

class Base {

static int age;

public:

Base () {};

~Base () {};

void setAge(int a=10) {age = a;}

void Print() { cout << age;}

};

int Base::age=0;

int main () {

Base a,*b;

b = new Base();

a.setAge();

b?>setAge(20);

a.Print();

b?>Print();

return 0;

}

A. It prints: 2020

B. It prints: 1020

C. It prints: 20

D. It prints: 10

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

A. It prints: 1

B. It causes a compilation error

C. It prints: -1

D. It prints: 0

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

A. It prints: 5.2110.0

B. It prints: 5.210.0

C. It prints: 52.10

D. It prints: 5210

What will variable "y" be in class B?

class A {

int x;

protected:

int y;

public:

int age;

};

class B : public A {

string name;

public:

void Print() {

cout << name << age;

}

};

A. public

B. private

C. protected

D. None of these

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

#include

#include

using namespace std;

int main()

{

string s1[]= {"H" , "t" };

string s;

for (int i=0; i<2; i++) {

s = s1[i];

s.insert(1,"o");

cout << s;

}

return( 0 );

}

A. It prints: Hoto

B. It prints: Ho

C. It prints: to

D. It prints: Ht

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

#include

#include

using namespace std;

class A {

protected:

int y;

public:

int x;

int z;

A() { x=1; y=2; z=3; }

A(int a, int b) : x(a), y(b) { z = x * y;}

void Print() {

cout << z;

}

};

int main () {

A a(2,5);

a.Print(); return 0; }

A. It prints: 10

B. It prints: 2

C. It prints: 6

D. It prints: 5