What is the output of the program?
#include <iostream>
#include <string>
using namespace std;
int main()
{
string s1="World";
string s2;
s2="Hello" + s1;
cout << s2;
return( 0 );
}

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
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";}
B(int s) { cout << "B int parameter";}
};
int main () {
A a2("Test");
B b1(10);
B b2(b1);
return 0;
}

What happens when you attempt to compile and run the following code?
#include <iostream> #include <string> using namespace std;
class B;
class A { int age; public: A () { age=5; }; friend class B; };
class B { string name;
public:
B () { name="Bob"; };
void Print(A ob) {
cout << name << ob.age;
}
};
int main () {
A a;
B b;
b.Print(a);
return 0;
}

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class A {
public:
void Print(){ cout<<"A";}
};
class C:public A {
public:
virtual void Print()=0;
};
int main()
{
C obj3;
obj3->Print();
}

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class Test {
float i,j;
};
class Add {
public:
int x,y;
Add (int a=3, int b=3) { x=a; y=b; }
int result() { return x+y;}
};
int main () {
Test test;
Add * padd;
padd = &test;
cout << padd?>result();
return 0;
}