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Question 26
What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
class A {
public:
int x;
A() { x=0;}
};
class B {
public:
int x;
B() { x=1;}
};
class C :public A, public B {
public:
int x;
C(int x) {
this?>x = x;
A::x = x + 1;
}
void Print() { cout << x << A::x << B::x; }
};
int main () {
C c2(1);
c2.Print();
return 0;
}
Question 27
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 B:public A {
public:
virtual void Print(){ cout<< "B"; }
};
class C:public B {
public:
void Print(){ cout<< "C"; }
};
int main()
{
A ob1;
B ob2;
C ob3;
A *obj;
obj = &ob1;
obj->Print();
obj = &ob2;
obj->Print();
obj = &ob3;
obj->Print();
}
Question 28
What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
void fun(int*);
int main()
{
int *x;
int i=2;
x=&i;
fun(x);
cout<<i;
return 0;
}
void fun(int *i)
{
*i = *i * *i;
}
Question 29
Which code, inserted at line 10, generates the output "2?1"?
#include <iostream>
#include <string>
using namespace std;
class A {
protected:
int y;
public:
int z;
};
//insert code here
public:
void set() {
y = 2;
z = 3;
}
void Print() { cout << y << z; }
};
int main () {
B b;
b.set();
b.z
= ?1; b.Print(); return 0; }
Question 30
What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
#define FUN(arg) if(arg) cout<<"Test";
int main()
{
int i=1;
FUN(i<3);
return 0;
}