Header files, Find & Coorect errors, Outputs, Function Overloading ,Classes & Object
1. What do you understand by Polymorphism? Give a suitable example of the same.How matching is done in function overloading.
2. Using the concept of function overloading provide the appropriate prototype and coding for the following assumptions.
Print(50,’*’) – to display the character * 50 times
Print(void) – to display the character % 25 times
Print(’#’) – to display the character # 30 times
Print(10) – to display the character $ 10 times
3. Apply the Function overloading concept and provide the coding for the following assumptions.
Count(char[],char ) – to count and display the number of occurrences of a character in the character array.
Count(char[]) – to count & display the number of occurrences of the character ‘a’ in the character array.
Count(long) – to count the number of digits in the long variable.
4. Define the following : Data Encapsulation, Data Hiding, Class, Object, Data Abstraction (support with example)
5. Differentiate between public and private visibility modes in context of Object Oriented Programming using a suitable example illustrating each.
6. How are data abstraction and data encapsulation inter-related?
7. Find Header Files For The Following
(a) Write the names of the header files to which the following belong:
(i) setw() (ii) sqrt() (iii) toupper() (iv) frexp() (v) isalnum() (vi) pow() (vii)clrscr()
(b)Name the header files that shall be needed for the following code.
void main()
{ char str*+=” air force schools “;
cout<
}
8. Identify and correct the errors in the following :
(a ) #include [iostream.h]
class PAYITNOW
{
int Charge;
PUBLIC:
void Raise(){cin>>Charge;}
void Show{cout<
};
void main()
{
PAYITNOW P;
P.Raise();
Show();
}
(b ) #include
class MEMBER
{
int Mno;
float fees=0;
PUBLIC:
void Register(){cin>>Mno>>fees;}
void Display();
}
Class MEMBER::Display()
{cout<
};
9. (a) Give the output of the following program
#include
int a=3;
void demo(int x,int y,int &z)
{ a+= x+y ;
z= a+y;
y+=x;
cout<
}
void main()
{
int a=2, b=5;
demo(::a,a,b);
cout<<::a<
demo(::a,a,b); }
(b)Find the output of the following program
# include
struct play
{
int score, bonus;
};
void calculate ( play &p, int n=10)
{
p.score ++ ;
p.bonus +=n;
}
void main()
{
play pl={10,15};
calculate (pl,5);
cout<
calculate(pl);
cout<
calculate(pl,15);
cout<
10. Define a class in C++ with following description:
Private Members :
A data member Flight number of type integer
A data member Destination of type string
A data member Distance of type float
A data member Fuel of type float
A member function CALFUEL() to calculate the value of Fuel as per the following
criteria
Distance Fuel
<=1000 500
more than 1000 and <=2000 1100
more than 2000 2200
Public Members :
A function FEEDINFO() to allow user to enter values for Flight Number, Destination,Distance & call the function CALFUEL() to calculate the quantity of Fuel
A function SHOWINFO() to allow user to view the content of all the data members
11. Define a class batsman with the following specifications:
Private members:
bcode 4 digits, bname 20 characters, innings, notout, runs all of them integer type.
batavg, it is calculated according to the formula batavg =runs/(innings-notout)
calcavg() Function to compute batavg
Public members:
readdata() Function to accept value from bcode, name, innings, notout and invoke the function calcavg()
displaydata() Function to display all the data members on the screen.
12. Define a class Clothing in C++ with the following descriptions :
Private members :
Code of type string, Type of type string, Size of type integer, Material of type string and Price of type float
A function CalcPrice() which calculates and assigns the value of Price as follows :
For the value of Material as “ Cotton “
Type Price (Rs.)
Trouser 1500
Shirt 1200
For material other than Cotton” the above mentioned Price gets reduced by 15%.
Public Members :
A constructor to assign initial values of Code , Type and Material with the word “
NOT ASSIGNED” and Size and Price with 0.
A function Enter() to input the values of the data members Code , Type , Size and Material and invoke the CalcPrice() function.
A function Show() which displays the content of all the data members of Clothing.
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