Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide chapter 15 - Polymorphism [Latest edition]

Which of the following refers to a function having more than one distinct meaning?

Which of the following reduces the number of comparisons in a program?

void dispchar(char ch=’$’,int size=10)
{
for(int i=1;i<=size;i++)
cout<<ch;
}

How will you invoke the function dispchar() for the following input?

To print $ for 10 times

Which of the following is not true with respect to function overloading?

Which of the following is an invalid prototype for function overloading?

What is function overloading?

List the operators that cannot be overloaded.

class add{int x; public: add(int)}; Write an outline definition for the constructor.

Does the return type of a function help in overloading a function?

What is the use of overloading a function?

What are the rules for function overloading?

How does a compiler decide as to which function should be invoked when there are many functions? Give an example.

What is operator overloading? Give some examples of operators which can be overloaded.

Discuss the benefits of constructor overloading?

class sale ( int cost, discount; public: sale(sale &); Write a non-inline definition for constructor specified;

What are the rules for operator overloading?

Answer the question after going through the following class.

class Book {
int BookCode ; char Bookname[20];float fees;
public:
Book( )   //Function 1
{ fees=1000;
BookCode=1;
strcpy(Bookname,"C++"); }
void display(float C) //Function 2
{ cout<<BookCode<<":"<<Bookname<<":"<<fees<<endl; }
~Book( )         //Function 3
{ cout<<"End of Book Object"<<endl; }
Book (intSC,char S[ ],float F) ; //Function 4
};

In the above program, what are Function 1 and Function 4 combined together referred to as?

Answer the question after going through the following class.

class Book {
int BookCode ; char Bookname[20];float fees;
public:
Book( )   //Function 1
{ fees=1000;
BookCode=1;
strcpy(Bookname,"C++"); }
void display(float C) //Function 2
{ cout<<BookCode<<":"<<Bookname<<":"<<fees<<endl; }
~Book( )         //Function 3
{ cout<<"End of Book Object"<<endl; }
Book (intSC,char S[ ],float F) ; //Function 4
};

Which concept is illustrated by Function3? When is this function called/invoked?

Answer the question after going through the following class.

class Book {
int BookCode ; char Bookname[20];float fees;
public:
Book( )   //Function 1
{ fees=1000;
BookCode=1;
strcpy(Bookname,"C++"); }
void display(float C) //Function 2
{ cout<<BookCode<<":"<<Bookname<<":"<<fees<<endl; }
~Book( )         //Function 3
{ cout<<"End of Book Object"<<endl; }
Book (intSC,char S[ ],float F) ; //Function 4
};

What is the use of Function 3?

Answer the question after going through the following class.

class Book {
int BookCode ; char Bookname[20];float fees;
public:
Book( )   //Function 1
{ fees=1000;
BookCode=1;
strcpy(Bookname,"C++"); }
void display(float C) //Function 2
{ cout<<BookCode<<":"<<Bookname<<":"<<fees<<endl; }
~Book( )         //Function 3
{ cout<<"End of Book Object"<<endl; }
Book (intSC,char S[ ],float F) ; //Function 4
};

Write the statements in main to invoke function1 and function2?

Answer the question after going through the following class.

class Book {
int BookCode ; char Bookname[20];float fees;
public:
Book( )   //Function 1
{ fees=1000;
BookCode=1;
strcpy(Bookname,"C++"); }
void display(float C) //Function 2
{ cout<<BookCode<<":"<<Bookname<<":"<<fees<<endl; }
~Book( )         //Function 3
{ cout<<"End of Book Object"<<endl; }
Book (intSC,char S[ ],float F) ; //Function 4
};

Write the definition for Function4.

Write the output of the following program.

include<iostream>
using namespace std;
class Seminar
{ int Time;
public:
Seminar()
{ Time=30;cout<<"Seminar starts now"<<endl; } void Lecture() 
cout<<"Lectures in the seminar on"<<endl; } Seminar(int Duration)
{ Time=Duration;cout<<"Welcome to Seminar "<<endl; }
Seminar(Seminar &D)
{ Time=D.Time;cout<<"Recap of Previous Seminar Content "<<endl;}
~Seminar()
{cout<<"Vote of thanks"<<endl; } };
int main()
{ Seminar s1,s2(2),s3(s2);
s1.Lecture();
return 0;
}

Answer the question based on the following program.

#include<iostream>
#include<string.h>
using namespace std;
class comp {
public:
char s[10];
void getstring(char str[10])
{ strcpy(s,str); }
void operator==(comp);
};
void comp::operator==(comp ob)
{ if(strcmp(s,ob.s)==0)
cout<<"\nStrings are Equal";
else
cout<<"\nStrings are not Equal"; }
int main()
{ comp ob, ob1;
char string1[10], string2[10];
cout<<"Enter First String:";
cin>>string1;
ob.getstring(string1);
cout<<"\nEnter Second String:";
cin>>string2;
ob1.getstring(string2);
ob==ob1;
return 0; }

Mention the objects which will have the scope till the end of the program.

Answer the question based on the following program.

#include<iostream>
#include<string.h>
using namespace std;
class comp {
public:
char s[10];
void getstring(char str[10])
{ strcpy(s,str); }
void operator==(comp);
};
void comp::operator==(comp ob)
{ if(strcmp(s,ob.s)==0)
cout<<"\nStrings are Equal";
else
cout<<"\nStrings are not Equal"; }
int main()
{ comp ob, ob1;
char string1[10], string2[10];
cout<<"Enter First String:";
cin>>string1;
ob.getstring(string1);
cout<<"\nEnter Second String:";
cin>>string2;
ob1.getstring(string2);
ob==ob1;
return 0; }

Name the object which gets destroyed in between the program.

Answer the question based on the following program.

#include<iostream>
#include<string.h>
using namespace std;
class comp {
public:
char s[10];
void getstring(char str[10])
{ strcpy(s,str); }
void operator==(comp);
};
void comp::operator==(comp ob)
{ if(strcmp(s,ob.s)==0)
cout<<"\nStrings are Equal";
else
cout<<"\nStrings are not Equal"; }
int main()
{ comp ob, ob1;
char string1[10], string2[10];
cout<<"Enter First String:";
cin>>string1;
ob.getstring(string1);
cout<<"\nEnter Second String:";
cin>>string2;
ob1.getstring(string2);
ob==ob1;
return 0; }

Name the operator which is overloaded and write the statement that invokes it.

Answer the question based on the following program.

#include<iostream>
#include<string.h>
using namespace std;
class comp {
public:
char s[10];
void getstring(char str[10])
{ strcpy(s,str); }
void operator==(comp);
};
void comp::operator==(comp ob)
{ if(strcmp(s,ob.s)==0)
cout<<"\nStrings are Equal";
else
cout<<"\nStrings are not Equal"; }
int main()
{ comp ob, ob1;
char string1[10], string2[10];
cout<<"Enter First String:";
cin>>string1;
ob.getstring(string1);
cout<<"\nEnter Second String:";
cin>>string2;
ob1.getstring(string2);
ob==ob1;
return 0; }

Write out the prototype of the overloaded member function.

Answer the question based on the following program.

#include<iostream>
#include<string.h>
using namespace std;
class comp {
public:
char s[10];
void getstring(char str[10])
{ strcpy(s,str); }
void operator==(comp);
};
void comp::operator==(comp ob)
{ if(strcmp(s,ob.s)==0)
cout<<"\nStrings are Equal";
else
cout<<"\nStrings are not Equal"; }
int main()
{ comp ob, ob1;
char string1[10], string2[10];
cout<<"Enter First String:";
cin>>string1;
ob.getstring(string1);
cout<<"\nEnter Second String:";
cin>>string2;
ob1.getstring(string2);
ob==ob1;
return 0; }

What types of operands are used for the overloaded operator?

Answer the question based on the following program.

#include<iostream>
#include<string.h>
using namespace std;
class comp {
public:
char s[10];
void getstring(char str[10])
{ strcpy(s,str); }
void operator==(comp);
};
void comp::operator==(comp ob)
{ if(strcmp(s,ob.s)==0)
cout<<"\nStrings are Equal";
else
cout<<"\nStrings are not Equal"; }
int main()
{ comp ob, ob1;
char string1[10], string2[10];
cout<<"Enter First String:";
cin>>string1;
ob.getstring(string1);
cout<<"\nEnter Second String:";
cin>>string2;
ob1.getstring(string2);
ob==ob1;
return 0; }

Which constructor will get executed in the above program? Write the output of the program?

Suppose you have a Kitty Bank with an initial amount of Rs500 and you have to add some more amount to it. Create a class 'Deposit' with a data member named 'amount' with an initial value of Rs500. Now make three constructors of this class as follows:

1. without any parameter - no amount will be added to the Kitty Bank

2. has a parameter which is the amount that will be added to the Kitty Bank

3. whenever an amount is added an additional equal amount will be deposited automatically.

Create an object of the 'Deposit’ and display the final amount in the Kitty Bank.