FINALTERM EXAMINATION
Spring 2010
Question No: 1 ( Marks: 1 ) - Please choose one
Pointer is a variable which store,
► Data
► Memory Address
► Data Type
► Values
Question No: 2 ( Marks: 1 ) - Please choose one
All preprocessor directives are started with the symbol______.
► *
► +
► @
► # ………Ans
Question No: 3 ( Marks: 1 ) - Please choose one
Within the statement obj1=obj2; obj1 will call the assignment operator function and obj2 will be passed as an argument to function.
► True
► False
Question No: 4 ( Marks: 1 ) - Please choose one
What is the sequence of event(s) when deallocating memory using delete operator?
► Only block of memory is deallocated for objects
► Only destructor is called for objects
► Memory is deallocated first before calling destructor
► Destructor is called first before deallocating memory
Question No: 5 ( Marks: 1 ) - Please choose one
The second parameter of operator functions for << and >> are objects of the class for which we are overloading these operators.
► True
► False
Question No: 6 ( Marks: 1 ) - Please choose one
To include code from the library in the program, such as iostream, a directive would be called up using this command.
► #include "iostream.h"
► include <iostream.h>
► include <iostream.h>
► #include <iostream.h>
Question No: 7 ( Marks: 1 ) - Please choose one
The number 544.53 must be stored in _____ data type.
► int
► short
► float
► char
Question No: 8 ( Marks: 1 ) - Please choose one
A template function can have different type of arguments.
► True
► False
Question No: 9 ( Marks: 1 ) - Please choose one
For which values of the integer _value will the following code becomes an infinite loop?
int number=1;
while (true) {
cout << number;
if (number == 3) break;
number += integer_value; }
► any number other than 1 or 2
► only 0
► only 1
► only 2
Question No: 10 ( Marks: 1 ) - Please choose one
Template class cannot have static variables.
► True
► False
Question No: 11 ( Marks: 1 ) - Please choose one
Which of the following is used with bit manipulation?
► Signed integer
► Un-signed integer
► Signed double
► Un-signed double
Question No: 12 ( Marks: 1 ) - Please choose one
Structure is a collection of ______________ under a single name.
► Only Functions
► Only Variables
► Both Functions and Variables
► None of the given options
Question No: 13 ( Marks: 1 ) - Please choose one
Which of the following is the correct C++ syntax to allocate space dynamically for an array of 10 int?
► new int(10) ;
► new int[10] ;
► int new(10) ;
► int new[10];
Question No: 14 ( Marks: 1 ) - Please choose one
Unary operator implemented as member function takes ____ arguments whereas non-member function takes _____ arguments.
► One, zero
► Zero, one
► One, two
► Two, one
Question No: 15 ( Marks: 1 ) - Please choose one
The first parameter of overloaded stream insertion operator is _________ where second parameter is _______
► input stream, object of class
► object of class, output stream
► output stream, object of class
► object of class, input stream
Question No: 16 ( Marks: 1 ) - Please choose one
We can also do conditional compilation with preprocessor directives.
► True
► False
Question No: 17 ( Marks: 1 ) - Please choose one
If a symbolic constant has been defined, it will be an error to define it again.
► True
► False
Question No: 18 ( Marks: 1 ) - Please choose one
While calling function, the arguments are assigned to the parameters from _____________.
► left to right.
► right to left
► no specific order is followed
► none of the given options.
Question No: 19 ( Marks: 1 ) - Please choose one
Classes defined inside other classes are called ________ classes
► looped
► nested
► overloaded
► none of the given options.
Question No: 20 ( Marks: 1 ) - Please choose one
If we define an identifier with the statement #define PI 3.1415926 then during the execution of the program the value of PI __________.
► cannot be replaced
► None of the given options
► Remain constant.
► can be changed by some operation
Question No: 21 ( Marks: 1 ) - Please choose one
Assignment operator is -------------------------associative.
► right
► left
► binary
► unary
Question No: 22 ( Marks: 1 ) - Please choose one
If text is a pointer of class String then what is meant by the following statement?
text = new String [5];
► Creates an array of 5 string objects statically
► Creates an array of 5 string objects dynamically
► Creates an array of pointers to string
► Creates a string Object
Question No: 23 ( Marks: 1 ) - Please choose one
The return type of the operator function for << operator is __________.
► class for which we overload operator
► reference of ostream class (ostream&)
► reference of istream class (istream&)
► void
Question No: 24 ( Marks: 1 ) - Please choose one
The code is written to __________ the program.
► implement
► design
► analysis
► none of the given options.
Question No: 25 ( Marks: 1 ) - Please choose one
Memory allocated at run time is a system resource and it is the responsibility of _____ to de-allocate the memory.
► System
► Programmer
► User of program
► None of given options
Question No: 26 ( Marks: 1 ) - Please choose one
Templates are not type safe.
► true
► false
Question No: 27 ( Marks: 2 )
Give the general syntax of class template.
Answer:
template <class T> // T is generic data type
class class-name()
{
// class definition
};
Question No: 28 ( Marks: 2 )
What is difference between endl and \n?
Answer:
endl ……..inserts new line and flush the stream
where as
\n inserts new line only
Question No: 29 ( Marks: 2 )
What is the this pointer? Give an example of its use.
Answer:
This pointer points to the current object. This pointer is implicitly available to every member fuction.
Question No: 30 ( Marks: 2 )
Identify each of the following as function call, function definition and function declaration.
1. int func(int num1, int num2);
Answer: Function declaration
2. int func(int, int);
Answer: Function declaration
3. func(5, 6) ;
Answer: Function call
4. int func(int num1, int num2){}
Answer: Function definition
Question No: 31 ( Marks: 3 )
Consider the following code segment. What will be the output of the following code segment?
class class1{
public:
class class2{
public:
class2()
{
cout << "Calling default constructor of class2\n" ;
}
};
class1(){
cout << "Calling default constructor of class1\n" ;
}
} ;
main(){
class1::class2 obj1;
class1 obj2 ;
}
Answer:
Calling default constructor of class2
Calling default constructor of class1
Question No: 32 ( Marks: 3 )
Is it possible to define two functions as given below? Justify your answer.
func(int x, int y)
func(int &x, int &y)
Answer:
no, this function overload is ambiguous because there is no way for complier to find out the way function is called. Both function calls are same.
Question No: 33 ( Marks: 3 )
What happens when we use new and delete operator?
Answer:
New operator
- Determines the size of memory needed to store object
- Calls the constructor of class
- Returns pointer to the object
Delete operator:
- Deletes the object
- De-allocate the memory
Question No: 34 ( Marks: 5 )
What is the difference between function overloading and operator overloading?
Answer:
Difference b/w function overloading and operator overloading is:
In function overloading, the functions have the same name but differ either by the number of arguments or the type of the arguments.
Operator overloading is to allow the same operator to be bound to more than one implementation, depending on the types of the operands.
Question No: 35 ( Marks: 5 )
Why the first parameter of operator function for << operator must be passed by reference?
Answer:
The first parameter of << is ostream and object cout is example of ostream object. This first parameter is always be passed by reference other complier will not allow you to do otherwise. The first object is returned back by reference. It is used for cascading. It cannot be passed by value. So only way is to pass by refence.
Question No: 36 ( Marks: 5 )
Read the given below code and explain what task is being performed by this function
Matrix :: Matrix ( int row , int col )
{
numRows = row ;
numCols = col ;
elements = new ( double * ) [ numRows ] ;
for ( int i = 0 ; i < numRows ; i ++ )
{
elements [ i ] = new double [ numCols ] ;
for ( int j = 0 ; j < numCols ; j ++ )
elements [ i ] [ j ] = 0.0 ;
}
}
Hint : This function belong to a matrix class, having
Number of Rows = numRows
Number of Columns = numCols
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