NAME: TEJAS MALI
ROLL NO.: 61
Practical No.:01
Implement a class Complex which represents the Complex Number data type. Implement the
following
1. Constructor (including a default constructor which creates the complex number 0+0i).
2. Overload operator+ to add two complex numbers.
3. Overload operator* to multiply two complex numbers.
4. Overload operators << and >> to print and read Complex Numbers
Code:
# include<iostream>
using namespace std;
class Complex //decaring Class Complex
double real;
double img;
public:
Complex(); // Default Constructor
friend istream & operator >> (istream &, Complex &); // Input
friend ostream & operator << (ostream &, const Complex &); // Output
Complex operator + (Complex); // Addition
Complex operator * (Complex); // Multiplication
};
Complex::Complex() // Default Constructor
real = 0;
img = 0;
} istream & operator >> (istream &, Complex & i)
{ cin >> i.real >> i.img;
return cin;
}
ostream & operator << (ostream &, const Complex & d)
cout << d.real << " + " << d.img << "i" << endl;
return cout;
Complex Complex::operator + (Complex c1) // Overloading + operator
Complex temp;
temp.real = real + c1.real;
temp.img = img + c1.img;
return temp;
Complex Complex::operator * (Complex c2) // Overloading * Operator
Complex tmp;
tmp.real = real * c2.real - img * c2.img;
tmp.img = real * c2.img + img * c2.real;
return tmp;
int main() {
Complex C1, C2, C3, C4;
int flag = 1;
char b;
while (flag == 1)
cout << "Enter Real and Imaginary part of the Complex Number 1 : \n";
cin >> C1;
cout << "Enter Real and Imaginary part of the Complex Number 2 : \n";
cin >> C2;
int f = 1;
while (f == 1)
cout << "Complex Number 1 : " << C1 << endl;
cout << "Complex Number 2 : " << C2 << endl;
cout << "**********MENU**********" << endl;
cout << "1. Addition of Complex Numbers" << endl;
cout << "2. Multiplication of Complex Numbers" << endl;
cout << "3. Exit\n";
int a;
cout << "Enter your choice from above MENU (1 to 3) : ";
cin >> a;
if (a == 1)
C3 = C1+C2;
cout << "Addition : " << C3 << endl;
cout << "Do you wan to perform another operation (y/n) : \n";
cin >> b;
if (b == 'y' || b == 'Y')
f=1;
} else
cout << "Thanks for using this program!!\n";
flag=0;
f=0;
} else if (a == 2)
C4 = C1 * C2;
cout << "Multiplication : " << C4 << endl;
cout << "Do you wan to perform another operation (y/n) : \n";
cin >> b;
if (b == 'y' || b == 'Y')
f=1;
} else
cout << "Thanks for using this program!!\n";
flag=0;
f=0;
} else
cout << "Thanks for using this program!!\n";
flag=0;
f=0; } } }
return 0;
Output:
NAME: TEJAS MALI
ROLL NO.: 61
Practical No.:02
Experiment Number 2: Develop a program in C++ to create a database of student’s information
system containing the following information: Name, Roll number, Class, Division, Date of Birth, Blood
group, Contact address, Telephone number, Driving license no. and other. Construct the database
with suitable member functions. Make use of constructor, default constructor, copy constructor,
destructor, static member functions, friend class, this pointer, inline code and dynamic memory
allocation operators-new and delete as well as exception handling.
code:
#include<iostream>
#include<string.h>
using namespace std;
class Data
string address;
long int *telephone;
long int *dl_no;
public:
Data();
~Data();
void input_student_data();
void display_student_data();
friend class Student;
};
class Student
string Name;
int Roll;
string Class;
char *Div;
string dob;
char *bg;
static int count;
public:
Student();
~Student();
static int get_count()
return count;
void input_data(Data *);
void display_data(Data *);
};
Data::Data()
address = " ";
telephone = new long;
dl_no = new long;
Data::~Data()
delete telephone;
delete dl_no;
void Data::input_student_data()
cout<<"Contact Address : ";
cin.ignore();
getline(cin,address);
cout<<"Telephone Number : ";
cin>>*telephone;
cout<<"Driving License Number : ";
cin>>*dl_no;
void Data::display_student_data()
cout<<"Contact Address : "<<address<<endl;
cout<<"Telephone Number : "<<*telephone<<endl;
cout<<"Driving License Number : "<<*dl_no<<endl;
Student::Student()
Name = " ";
Roll = 0;
Class = " ";
Div = new char;
dob = "dd/mm/yyyy";
bg = new char[5];
Student::~Student()
delete Div;
delete[] bg;
inline void Student::input_data(Data *stud1)
cout<<"Name : ";
cin.ignore();
getline(cin,Name);
cout<<"Roll Number : ";
cin>>Roll;
cout<<"Class : ";
cin.ignore();
getline(cin,Class);
cout<<"Division : ";
cin>>Div;
cout<<"Date of Birth : ";
cin.ignore();
getline(cin,dob);
cout<<"Blood Group : ";
cin>>bg;
stud1->input_student_data();
count++;
inline void Student::display_data(Data *stud2)
cout<<"Name : "<<Name<<endl;
cout<<"Roll Number : "<<Roll<<endl;
cout<<"Class : "<<Class<<endl;
cout<<"Division : "<<Div<<endl;
cout<<"Date of Birth : "<<dob<<endl;
cout<<"Blood Group : "<<bg<<endl;
stud2->display_student_data();
cout<<" \n";
int Student::count;
int main()
Student *st1[100];
Data *st2[100];
int a;
int s=0;
char ch;
cout<<" MENU \n";
cout<<"1. New Student\n";
cout<<"2. View Database\n";
cout<<"Enter your choice : "<<endl;
cin>>a;
if(a==1)
do
st1[s] = new Student;
st2[s] = new Data;
cout<<"Enter the details of student "<<s+1<<" : "<<endl;
st1[s]->input_data(st2[s]);
s++;
cout<<"Do you want to create a new student (y/n): ";
cin>>ch;
}while(ch=='y' || ch=='Y');
else if(a==2)
cout<<"**************************StudentDatabase****************************"<<endl;
for(int i=0;i<s;i++)
st1[i]->display_data(st2[i]);
else
cout<<"WRONG CHOICE\n";
cout<<"Total Number of Students : "<<Student::get_count()<<endl;
return 0;
}
Output:
NAME: TEJAS MALI
ROLL NO.: 61
Practical No.:03
Imagine a publishing company which does marketing for book and audiocassette versions. Create a
class publication that stores the title (a string) and price (type float) of publication. From this class
derive two classes: book, which adds a page count (type integer), and tape, which adds a playing
time in minutes (type float). Write a program that instantiates the book and tape classes, allows user
to enter data and displays the data members. If an exception is caught, replace all the data member
values with zero values.
Code:
# include<iostream>
# include<stdio.h>
using namespace std;
class publication
private:
string title;
float price;
public:
void add()
cout << "\nEnter the Publication information : " << endl;
cout << "Enter Title of the Publication : ";
cin.ignore();
getline(cin, title);
cout << "Enter Price of Publication : ";
cin >> price;
void display()
cout << "\n ";
cout << "\nTitle of Publication : " << title;
cout << "\nPublication Price : " << price;
};
class book : public publication
private:
int page_count;
public:
void add_book()
try
add();
cout << "Enter Page Count of Book : ";
cin >> page_count;
if (page_count <= 0)
throw page_count;
catch(...)
cout << "\nInvalid Page Count!!!";
page_count = 0;
void display_book()
display();
cout << "\nPage Count : " <<
page_count;
cout << "\n \n";
};
class tape : public publication
private:
float play_time;
public:
void add_tape()
try
add();
cout << "Enter Play Duration of the Tape : ";
cin >> play_time;
if (play_time <= 0)
throw play_time;
catch(...)
cout << "\nInvalid Play Time!!!";
play_time = 0;
void display_tape()
display();
cout << "\nPlay Time : " <<
play_time << " min";
cout << "\n \n";
}
};
int main()
book b1[10];
tape t1[10];
int ch, b_count = 0, t_count = 0;
do
cout << "\n* * * * * PUBLICATION DATABASE SYSTEM * * * * *";
cout << "\n MENU ";
cout << "\n1. Add Information to Books";
cout << "\n2. Add Information to Tapes";
cout << "\n3. Display Books Information";
cout << "\n4. Display Tapes Information";
cout << "\n5. Exit";
cout << "\n\nEnter your choice : ";
cin >> ch;
switch(ch)
case 1:
b1[b_count].add_book();
b_count ++;
break;
case 2:
t1[t_count].add_tape();
t_count ++;
break;
case 3:
cout << "\n* * * * BOOK PUBLICATION DATABASE SYSTEM * * * *";
for (int j=0;j < b_count;j++)
{
b1[j].display_book();
break;
case 4:
cout << "\n* * * * TAPE PUBLICATION DATABASE SYSTEM * * * *";
for (int j=0;j < t_count;j++)
t1[j].display_tape();
break;
case 5:
exit(0);
}while (ch != 5);
return 0;
Output:
NAME: TEJAS MALI
ROLL NO.: 61
Practical No.:04
Write a C++ program that creates an output file, writes information to it, closes the file, open it again
as an input file and read the information from the file.
Code:
#include<iostream>
#include<fstream>
using namespace std;
class Employee
string Name;
int ID;
double salary;
public:
void accept()
cout<<"\n Name : ";
cin.ignore();
getline(cin,Name);
cout<<"\n Id : ";
cin>>ID;
cout<<"\n Salary : ";
cin>>salary;
void display()
cout<<"\n Name : "<<Name;
cout<<"\n Id : "<<ID;
cout<<"\n Salary : "<<salary<<endl;
}
};
int main()
Employee o[5];
fstream f;
int i,n;
f.open("demo.txt");
cout<<"\n Enter the number of employees you want to store : ";
cin>>n;
for(i=0;i<n;i++)
cout<<"\n Enter information of Employee "<<i+1<<"\n";
o[i].accept();
f.write((char*)&o[i],sizeof o[i]);
f.close();
f.open("demo.txt",ios::in);
cout<<"\n Information of Employees is as follows : \n";
for(i=0;i<n;i++)
cout<<"\nEmployee "<<i+1<<"\n";
f.write((char*)&o[i],sizeof o[i]);
o[i].display();
f.close();
return 0;
}
Output:
NAME: TEJAS MALI
ROLL NO.: 61
Practical No.:05
Write a function template for selection sort that inputs, sorts and outputs an integer array and
float array.
Code:
#include<iostream>
using namespace std;
int n;
#define size 10
template<class T>
void sel(T A[size])
int i,j,min;
T temp;
for(i=0;i<n-1;i++)
min=i;
for(j=i+1;j<n;j++)
if(A[j]<A[min])
min=j;
temp=A[i];
A[i]=A[min];
A[min]=temp;
cout<<"\nSorted array:";
for(i=0;i<n;i++)
cout<<" "<<A[i];
}
int main()
int A[size];
float B[size];
int i;
int ch;
do
cout<<"\n* * * * * SELECTION SORT SYSTEM * * * * *";
cout<<"\n MENU ";
cout<<"\n1. Integer Values";
cout<<"\n2. Float Values";
cout<<"\n3. Exit";
cout<<"\n\nEnter your choice : ";
cin>>ch;
switch(ch)
case 1:
cout<<"\nEnter total no of int elements:";
cin>>n;
cout<<"\nEnter int elements:";
for(i=0;i<n;i++)
{
cin>>A[i];
sel(A);
break;
case 2:
cout<<"\nEnter total no of float elements:";
cin>>n;
cout<<"\nEnter float elements:";
for(i=0;i<n;i++)
cin>>B[i];
sel(B);
break;
case 3:
exit(0);
}while(ch!=3);
return 0;
Output:
NAME: TEJAS MALI
ROLL NO.: 61
Practical No.:06
Write C++ Program using STL for sorting and searching user defined
records such as item records using vector container.
Code:
#include <iostream> //standard input output stream header file
#include <algorithm> //The STL algorithms are generic
#include <vector> //The header file for the STL vector library is vector.
using namespace std;
class Item // creating class Item
public:
char name[10];
int quantity;
int cost;
int code;
bool operator==(const Item& i1) //Boolean operators allow you to create more complex conditional
statements
if(code==i1.code) //operator will return 1 if the comparison is true, or 0 if the comparison is false
return 1;
return 0;
bool operator<(const Item& i1)
if(code<i1.code) //operator will return 1 if the comparison is true, or 0 if the comparison is false
return 1;
return 0;
};
vector<Item> o1;
void print(Item &i1);
void display();
void insert();
void search();
void dlt();
bool compare(const Item &i1, const Item &i2)
//if (i1.name != i2.name) return i1.cost < i2.cost;
return i1.cost < i2.cost;
int main()
int ch;
do
cout<<"\n* * * * * Menu * * * * *";
cout<<"\n1.Insert";
cout<<"\n2.Display";
cout<<"\n3.Search";
cout<<"\n4.Sort";
cout<<"\n5.Delete";
cout<<"\n6.Exit";
cout<<"\nEnter your choice : ";
cin>>ch;
switch(ch)
case 1:
insert();
break;
case 2:
display();
break;
case 3:
search();
break;
case 4:
sort(o1.begin(),o1.end(),compare);
cout<<"\n\n Sorted on Cost : ";
display();
break;
case 5:
dlt();
break;
case 6:
exit(0);
}while(ch!=7);
return 0;
void insert()
Item i1;
cout<<"\nEnter Item Name : ";
cin>>i1.name;
cout<<"\nEnter Item Quantity : ";
cin>>i1.quantity;
cout<<"\nEnter Item Cost : ";
cin>>i1.cost;
cout<<"\nEnter Item Code : ";
cin>>i1.code;
o1.push_back(i1);
void display()
for_each(o1.begin(),o1.end(),print);
void print(Item &i1)
cout<<"\n";
cout<<"\nItem Name : "<<i1.name;
cout<<"\nItem Quantity : "<<i1.quantity;
cout<<"\nItem Cost : "<<i1.cost;
cout<<"\nItem Code : "<<i1.code;
cout<<"\n\n";
void search()
vector<Item>::iterator p;
Item i1;
cout<<"\nEnter Item Code to search : ";
cin>>i1.code;
p=find(o1.begin(),o1.end(),i1);
if(p==o1.end())
cout<<"\nNot found!!!";
else
cout<<"\nFound!!!";
}
void dlt()
vector<Item>::iterator p;
Item i1;
cout<<"\nEnter Item Code to delete : ";
cin>>i1.code;
p=find(o1.begin(),o1.end(),i1);
if(p==o1.end())
cout<<"\nNot found!!!";
else
o1.erase(p);
cout<<"\nDeleted!!!";
Output:
NAME: TEJAS MALI
ROLL NO.: 61
Practical No.:07
Write a program in C++ to use map associative contain the keys will be the names of states and the
values will be the populations of the states. When the program runs, the user is prompted to type
the name of a state. The program than looks in the map, using the state name as an index and
returns the population of the state.
Code:
#include <iostream>
#include <map>
#include <string>
#include <utility>
using namespace std;
int main()
typedef map<string,int> mapType;
mapType populationMap;
populationMap.insert(pair<string, float>("Maharashtra", 125));
populationMap.insert(pair<string, float>("Uttar Pradesh", 225));
populationMap.insert(mapType::value_type("Bihar", 120));
populationMap.insert(mapType::value_type("West Bengal", 100));
populationMap.insert(make_pair("Madhya Pradesh", 90));
populationMap.insert(make_pair("Tamil Nadu", 80));
populationMap.insert(make_pair("Rajasthan", 78));
populationMap.insert(make_pair("Andhra Pradesh", 53));
populationMap.insert(make_pair("Odisha", 47));
populationMap.insert(make_pair("Kerala", 38));
populationMap.insert(make_pair("Telangana", 37));
populationMap.insert(make_pair("Assam", 35));
populationMap.insert(make_pair("Jharkhand", 38));
populationMap.insert(make_pair("Karnataka", 68));
populationMap.insert(make_pair("Gujarat", 70));
populationMap.insert(make_pair("Punjab", 31));
populationMap.insert(make_pair("Chhattisgarh", 30));
populationMap.insert(make_pair("Haryana", 29));
populationMap.insert(make_pair("UT Delhi", 19));
populationMap.insert(make_pair("UT Jammu and Kashmir", 14));
populationMap.insert(make_pair("Uttarakhand", 12));
populationMap.insert(make_pair("Himachal Pradesh", 8));
populationMap.insert(make_pair("Tripura", 04));
populationMap.insert(make_pair("Meghalaya", 4));
populationMap.insert(make_pair("Manipur[", 3));
populationMap.insert(make_pair("Nagaland", 2));
populationMap.insert(make_pair("Goa", 2));
populationMap.insert(make_pair("Arunachal Pradesh", 2));
populationMap.insert(make_pair("UT Puducherry", 2));
populationMap.insert(make_pair("Mizoram", 1));
populationMap.insert(make_pair("UT Chandigarh", 1));
populationMap.insert(make_pair("Sikkim", 1));
populationMap.insert(make_pair("UT Dadra and Nagar Haveli and Daman and Diu", 1));
populationMap.insert(make_pair("UT Andaman and Nicobar Islands", 1));
populationMap.insert(make_pair("UT Lakshadweep", 0.0003));
populationMap.insert(make_pair("UT Ladakh", 0.00006));
mapType::iterator iter = --populationMap.end();
populationMap.erase(iter);
cout << "Total state and UT of India with Size of populationMap: " << populationMap.size() << '\n';
for (iter = populationMap.begin(); iter != populationMap.end(); ++iter)
{
cout << iter->first <<":" << iter->second << " million\n";
char c;
do
{
string state;
cout<<"\nEnter that state you want to know the population of: ";
cin>>state;
iter = populationMap.find(state);
if( iter != populationMap.end() )
cout << state <<"'s populations is "
<< iter->second << " million\n";
else
cout << "State is not in populationMap" << '\n';
cout<<"Do you wish to continue?(y/n):";
cin>>c;
}while(c=='y'||c=='Y');
populationMap.clear();
return 0;
}
Output:
