C++ Programming Practice Test 5

1. What will be the output of the following C++ code?

#include <iostream>  
using namespace std;
class A{
	A(){
		cout<<"Constructor called";
	}
};
int main(int argc, char const *argv[])
{
	A a;
	return 0;
}

2. What will be the output of the following C++ code?

#include <iostream>
#include <string>
using namespace std;
class A{
	mutable int a;
public:
	A(){
		cout<<"A's Constructor called\n";
	}
	~A(){
		cout<<"A's Destructor called\n";
	}
};

class B{
	static A a;
public:
	B(){
		cout<<"B's Constructor called\n";
	}
	~B(){
		cout<<"B's Destructor called\n";
	}
};

A B::a;

int main(int argc, char const *argv[])
{
	return 0;
}

3. What will be the output of the following C++ code?

#include <iostream>
#include <string>
using namespace std;
class A{
	mutable int a;
public:
	A(){
		cout<<"A's Constructor called\n";
	}
	~A(){
		cout<<"A's Destructor called\n";
	}
};
class B: public A{
	A a;
public:
	B(){
		cout<<"B's Constructor called\n";
	}
	~B(){
		cout<<"B's Destructor called\n";
	}
};
int main(int argc, char const *argv[])
{
	B b1;
}

4. Pick out the correct statement.

5. What is the syntax of an explicit call for a template? Assume the given template function.

template<class T, class U>
void func(T a, U b)
{
	cout<<a<<"\t"<<b<<endl;
}

6. Which parameter is legal for non-type template?

7. What is the syntax of class template?

8. What is the use of the 'finally' keyword?

9. What should be the name of the constructor?

10. Which is used to create a pure virtual function?