CBSE Computer Science - Revision Tour(Solved)

CBSE Guess > eBooks > Class XII > CBSE Computer Science Constructors And Destructors Solved Revision Tour By Mr. Ravi Kiran

COMPUTER SCIENCE CONSTRUCTORS AND DESTRUCTORS

DELHI 2008

2.b) Answer the questions (i) and (ii) after going through the following program:

2

#include <iostream.h>
#include<string.h>
class bazaar
{ char Type[20] ;
char product [20];
int qty ;
float price ;
bazaar()
//function 1
{ strcpy (type , “Electronic”) ;
strcpy (product , “calculator”);
qty=10;
price=225;
}
public :
void Disp() //function 2
{ cout<< type <<”-”<<product<<”:” <<qty<< “@” << price << endl ;
}
};
void main ()
{ Bazaar B ; //statement 1
B. disp() ; //statement 2
}

(i) Will statement 1 initialize all the data members for object B with the values given in the function 1 ? (YES OR NO). Justify your answer suggesting thecorrection(s) to be made in the above code.

Ans: No. The reason is the constructor should be defined under the public visibility label.

(ii) What shall be the possible output when the program gets executed ? (Assuming, if required _ the suggested correction(s) are made in the program).

Ans: Possible Output:

Electronic–Calculator:10@225

2.c) Define a class Garments in c++ with following descriptions.

4

private members :

GCode    of type string
GType     of type string
Gsize      of type intiger
Gfabric   of type istring
Gprice    of type float

A function Assign() which calculate and the value of GPrice as follows.For the value of GFabric “COTTON” ,

GType           GPrice(RS)
TROUSER   1300
SHIRT           1100
For GFabric other than “COTTON”, the above mentioned GPrice gets reduced by 10%

public members:
A constructor to assign initial values of GCode,GType and GFabric with the a word “NOT ALLOTED”and Gsize and Gprice with 0.
A function Input () to the values of the data membersGCode, GType,Gsize and GFabric and invoke the Assign() function.
A function Display () which displays the content of all the data members for a garment.

#include<iostream.h>
#include<string.h>
#include<conio.h>
#include<stdio.h>
class Garments
{ char GCode[21],GType[21];
int Gsize;
char Gfabric[21];
float Gprice;
void Assign( )
{
if(strcmp(strupr(Gfabric),"COTTON")==0)
{ if(strcmp(strupr(GType),"TROUSER")==0)
Gprice=1300;
if(strcmp(strupr(GType),"SHIRT")==0)
Gprice=1100;
}
else
{if(strcmp(strupr(GType),"TROUSER")==0)
Gprice=1300*0.90;
if(strcmp(strupr(GType),"SHIRT")==0)
Gprice=1100*0.90;
} }
public:
Garments( )
{
strcpy(GCode,"NOT ALLOTED");
strcpy(GType,"NOT ALLOTED");
Gsize=0;
strcpy(Gfabric,"NOT ALLOTED");
Gprice=0;
}
void Input( )
{ cout<<"\nEnter the Grament Code: ";
gets(GCode);
cout<<"\nEnter the Garment Type: ";
gets(GType);
cout<<"\nEnter the Garment Size: ";
cin>>Gsize;
cout<<"\nEnter the Garment Fabric: ";
gets(Gfabric);
Assign( );
} void display( )
{ cout<<"\nThe Garment Code: "<<GCode;cout<<"\nThe Garment Type: "<<GType;
cout<<"\nThe Garment Size: "<<Gsize;
cout<<"\nThe Garment Fabric: "<<Gfabric;
cout<<"\nThe Garment Price: "<<Gprice;
}
};
void main( )
{ Garments G;
G.Input( );
G.display( ); }

CBSE Computer Science Solved Revision Tour By Mr. Ravi Kiran ( mrkdata@yahoo.com )