Oracle Financial Services Campus Recruitment - 2012 - Aptitude C++

Oracle Financial Services Campus Recruitment - 2012

Aptitude Questions

 

BASIC COMPUTER KNOWLEDGE APTITUDE SECTION – Sample Questions

C++  Aptitude Questions

Basic level of the C++ assessment. No points will be deducted for wrong answers. Questions are from Fundamentals , Object Oriented Programming , Arrays, Strings, Files etc .

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Question Number 1

What will be the output of the following program?

int main(){
if(cout << "Hello ")

{
cout<< "Universe \n";
}
else
{
cout<< "World \n";
}
return 0;
}

a. Universe

b. Hello Universe

c. World

d. Hello World

Question Number 2 

What will be the output of the following program?

#include<iostream.h>

int main()

{

int i, j =5;

{

for (i= 0; i<= j; i++)

cout << i;

j++;

}

return 0;

}

a. 024

b. 0123456

c. Prints an infinite loop

d. 012345

Question Number 3 

What will be the output of the following code sample?

#include <iostream>

using namespace std;

int main ()

{

int a, b;

int result;

a = 5;

b = 2;

a = ++a;

result = a - b;

cout << result;

return 0;

}

a. 4

b. 3

c. 5

d. Compiler error

Question Number 4 

What does the following expression find?

if(X%4==0&&X%100!=0||X%400==0)

a. Prime number

b. Armstrong numbers

c. Invalid expression

d. Leap year

Question Number 5

Which one of the following actions call the copy constructor?

a. Passing an argument by reference

b. Passing an argument by using a pointer

c. Passing an argument by value

d. All of these

Question Number 6 

What will be the output of the following program?

#include<iostream.h>

class node

{

public:

virtual void display(int i)

{

cout<<"Iam in node"<<endl;

}

virtual int display(int i)

{

cout<<"I am in overloaded display"<<endl;

}

};

class derived:public node

{

private:

void display()

{

cout<<"Iam in derived"<<endl;

}

};

int main()

{

node *n;

derived d;

n = &d;

n->display();

getch();

}

a. Compiler error

b. Iam in derived

c. I am in overloaded display

d. Iam in node

Question Number 7

How can the constructor handle a failure?

I. By returning a value as status.

II. By throwing exception.

III. No error handling can be done.

a. I only

b. II only

c. III only

d. I and II

Question Number 8

Which one of the following statements is TRUE about the following program?

#include<iostream.h>

class Base

{

public:

Base(void)

{

}

virtual ~Base(void){}=0;

};

int main ()

{

return 0;

}

a. Class inherited from base must override the destructor of base

b. Above code has a syntax error

c. Above code doesn't have any error

d. A destructor cannot be pure virtual

Question Number 9

What is the default access level assigned to members of a class?

a. Friendly

b. Private

c. Abstracted

d. Protected

Question Number 10

Which of the following is TRUE about Virtual Functions?

a. Virtual Functions of the Base class must always be implemented in its Derived class

b. Pure virtual function must never have a body

c. Pure virtual function cannot be static

d. The call to a Virtual Functions work slower than normal function calls

Question Number 11

Which one of the following statements holds good for C++?

a. When a base class is either Privately or Publicly inherited, the private members of the base class never gets inherited in the derived class

b. When a base class is either Privately or Publicly inherited, None of the members of the base class gets inherited in the derived class

c. When a base class is either Privately, Only private members of the base class gets inherited in the derived class

d. When a base class is either Privately or Publicly inherited, the private members of the base class gets inherited in the derived class too

Question Number 12

Which of the following are valid places from where a function can be invoked in C++?

a. main() function

b. Another function

c. Within itself

d. All of the above

Question Number 13

How many times does the loop execute?

#include <iostream.h>

int main(void)

{

static int i = 0;

do

{

++i;

}while(i>=10);

}

a. 1

b. 10

c. 0

d. Infinite

Question Number 14

What are member functions in C++?

a. Any nonstatic function declared outside a class declaration is called member function

b. Any static function declared inside a class declaration is called member function

c. Any static function declared outside a class declaration is called member function

d. Any nonstatic function declared inside a class declaration is called member function

Question Number 15

What will be the output of the following code ?

#include <iostream.h>

class A

{

public:

virtual void example()=0;

};

class B:public A

{

public:

void example()

{

cout<<"One";

}

};

class C:public A

{

public:

void example()

{

cout<<"Two";

}

};

void main()

{

A* arra[2];

B e1;

C e2;

arra[0]=&e1;

arra[1]=&e2;

arra[0]->example();

arra[1]->example();

}

a. One

b. No Output

c. OneTwo

d. Compiler error

Question Number 16

Which of the following header files are part of Standard Input/Output Library?

1. iostream

2. fstream

3. sstream

4. iomanip

a. 1 only

b. 2 & 3 only

c. 1 & 2 both

d. All of these

Question Number 17

Which class is the ifstream derived from?

a. istream

b. fstream

c. iostream

d. ofstream

Question Number 18

What will be the output of the following program?

int main(void)

{

char x[]={'h','e','l','l','o'};

x[sizeof(x+1)] = '\0';

cout << x;

return 0;

}

a. hell

b. hello followed by some junk values

c. Runtime error

d. hello

Question Number 19

What will be the correct way, if we want to read the file file.bin in binary mode and want to place the file pointer at the end?

a. ifstream myfile ("file.bin", ios::in | ios::app | ios::binary);

b. ofstream myfile ("file.bin", ios::in | ios::ate | ios::binary);

c. ofstream myfile ("file.bin", ios::in | ios::app | ios::binary);

d. ifstream myfile ("file.bin", ios::in | ios::ate | ios::binary);

Question Number 20

What will be the output of the following program?

#include <iostream.h>

int main ()

{

char myword [] = { 'H', 'e', 'l', 'l', 'o', '\0' };

char myword1 [] = "Hello";

cout<< myword<< " " << myword1;

}

a. Runtime error

b. Hello H

c. Hello Hello

d. Compiler error