Cs 201 Final Term feb 3 2012

Cs 201 2012 Final Term

Long Question

Q1: Given is the code for a class named Coordinate.(10)

class Coordinate
{

private:

int X, Y;

public:

Coordinate()
{
X = 0;
Y = 0;
}

 

class Coordinate
{
friend void Displaycord();
private:

int X, Y;

public:

Coordinate()
{
X = 0;
Y = 0;
}

};

 

 

Q2: Write a program that defines a Template function named Square () which finds the square of a number and then return it. Define one variable of type int in main function and then call Square function on that. (10)

Program output should look like this:

Enter an integer value to find its Square: 6
Square of integer number is: 36

Q3: Why is it necessary to initialize a static object as the time of creation and how it is initialized ?(5)
Q4:Transform the following If-else statement into switch statement.(5)

if (x == 5)

else if (x == 10 || x == 11)

else if (x == 8)

else if (x == 9)

else

 

Q5:Read the given code and explain code functionality. (3)
Matrix :: Matrix ( const Matrix & m )
{
numRows = m.numRows ;
numCols = m.numCols ;
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 ] = m.elements [ i ] [ j ] ;
}
}

Hint : This function belong to a matrix class, having
Number of Rows = numRows
Number of Columns = numCols

Q6: In the following code;(3)

#include <iostream.h>
#include <conio.h>
main() {

double j;

getche();

}

Is double j; an example of global variable or local variable ? Why ?
Q7: Identify and correct the error in the given code segment.(3)
main()
{
int val = 30;
int &ref = val;

&ref = &ref++;

}

Q8: Determine the output of the given program code.(2)

for (int I = 1; i<5; i++){
if ( I == 3)
continue;
cout I endl ;
}

Q9: What is the output of following code snippet.(2)

// class templates
#include <iostream>
using namespace std;

template <class T>
class mypair {
T a, b;
public:
mypair (T first, T second)
{a=first; b=second;}
T getmax ();
};

template <class T>
T mypair<T>::getmax ()
{
T retval;
retval = a>b? a : b;
return retval;
}
int main () {
mypair <int> myobject (100, 75);
cout myobject.getmax();
system(“pause”);
}
Q10: How can we declare and initialize static data member of a class?(2)

Q11: When memory is allocated dynamically using new operator within the constructor of class then what is an appropriate place to de-allocate the memory?(2)

Q11: Write down the output of the following code segment? (2)

int x[10] = {0,1, 2, 3, 4, 5, 6, 7, 8, 9};
int *xptr;
xptr = &x[5];
cout *(xptr++) + 1;

MCQ
Sequence of event(s) when allocating memory using new operator is ____________.

Assignment operator is ________ associative

To avoid dangling reference, always return _________.
Which value is returned by the destructor of a class?
The functions used for dynamic memory allocation return pointer of type ______.
The function free() returns back the allocated memory got through calloc and malloc to _____ .
At the time of linking, library functions are available in the ________form.
Which of the following is NOT a preprocessor directive?
When we define an array of objects then ___________.
A constructor will create a new object with a full copy of the other object, this type of copy is known as ___________.
When an object of a class is defined inside another class then ______________.
Every stream has _________.
_________in the following options is not a method of output stream.
To perform manipulation with input/output, we have to include ________ header file
A class whose object is contained as const object, must have ____________.
By using objects as class members, _________ is achieved
The operator function will be implemented as _____, if both objects (obj1, obj2) are passed as arguments to – operator in the statement given below.
obj3 = obj1 – obj2;

ANSI stands for _________.
A template function must have at least _______________ generic data type.

Which of the following is true about operator overloading?
1-The operator works with only objects of the class in which it is overloaded.
2-The operator works with objects and primitive data types regardless of parameters.
3-The operator works with both objects and primitive data types depending on parameters.
4-The operator must have a constant and an object as parameters.
Operator overloading can be performed through__________________.
The pointer returned by the new operator points to ___________ of memory chunks allocated by the new operator.

The return type of the operator function for operator is __________.

What will be the output of following statement?

cout setfill(‘0’) setw(7) 128 ;

The operator used for casting in C is standard ________ operator.

 

Consider the following code segment.

struct intorDouble
{
Int ival;
Double charvar;
};

main()
{
intorDouble VAZ;
int size ;
size = sizeof(VAZ);
}

What will be the value of variable size if integer occupies 4 bytes and double occupies 8 bytes?

The file-open mode __________ is used to open a file for output and move to the end of the file.

In the statement int &x = y; compiler ______.
Which header file must be included to use the functions tolower() and toupper()?
Which one of the following functions is included in stdlib.h header file?
For one byte, there are _____ combinations of values which can be stored in computer.
Which of the following statement is best regarding declaration of friend function?
Answer- It can be declared anywhere in class as these are not affected by the public and private keywords.

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