C++ Practical File Complete

8/3/2019 C++ Practical File Complete

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ASHOKA COLLEGE OF COMPUTER EDUCATION


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PROGRAM -1: WAP in C++ to find the factorial of a number using functions.

INPUT: Enter any number.

EXPLAINATION: Here in this program we declare two variables n and fact. To find the factorial of

a number we use data type i.e, unsigned int .

SOURCE CODE:

#include

#include

int main() //beginning of main f()

{

unsigned int n,fact; //variable declaration

unsigned int factorial(unsigned int); //function declaration

cout


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OUTPUT:


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PROGRAM-2: WAP in C++ to find the volume of cube using functions.

INPUT : Enter any number.

EXPLAINATION: Here in this program we declare two variables a,b and one function i.e,cube . To find

the cube of a number we use formula i.e,cube=side*side*side .

SOURCE CODE:

#include

#include

int main() //begining of main f()

{

int a,b; //declaration of variables

int cube(int); //declaration of function

cout


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OUTPUT:


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PROGRAM-3: WAP in C++ to swap two numbers using call by value.

INPUT : Enter the value of a and b.

EXPLAINATION: Swap means to interchange the values In this program we declare two variables a and

b. To swap two numbers we take another temperory variable i.e, z in user defined function.

SOURCE CODE:

#include

#include


{

int a,b; //variable declaration

void swap(int,int); //function declaration

cout


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y=z;

cout


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PROGRAM-4: WAP in C++ to swap two numbers using call by reference.


EXPLAINATION: Refenence means address(&) .In this program we declare two variables a and b. To

swap two numbers by call by reference we take another temperory variable i.e, z in user defined f().

SOURCE CODE:

#include

#include


{

int a,b; //variable declaration

void swap(int&,int&); //function declaration

cout


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y=z;

cout


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PROGRAM-5: WAP in C++ to find the simple interest using the concept of default arguments.

EXPLAINATION: In this program we declare variable nand function siand apply the formula of simple

interest i.e,S.I=(p*r*t)/100 in user defined f().

SOURCE CODE:

#include

#include


{

float n; //variable declaration

float si(float, float, float t=5); //function declaration

cout


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OUTPUT:


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PROGRAM-6: Wap to enter the name ,age and percentage.

INPUT : Enter any name, age and percentage.

EXPLAINATION:Structure is a collection of dissimiliar type of data elements.In this program the

structure name is student .We declare three variable i.e, name, age and per .We have to enter

the name ,age and per of two students.

SOURCE CODE:

#include

#include

struct student //name of the structure

{

char name[20];

int age;

float per;

}s1,s2;


{

cout


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cin>>s2.name;

couts2.age;

couts2.per;

cout


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PROGRAM-7: Wap to demonstrate the concept of data abstraction.


EXPLAINATION: Data abstraction means to know about the essential features by by hiding the

background details. In this program the class name is ABC .We declare three variables a,b,c and

member functions read, process and show.We have to add two numbers. In main f() we create

one object i.e,o1

SOURCE CODE:

#include

#include

class ABC //name of class

{

int a,b,c; //data member

public:

void read() //member function

{

cout


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cout


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PROGRAM-8: Wap to demonstrate the concept of dataencapsulation.


EXPLAINATION: Data encapsulation means the wrapping up of data and functions in a single unit(called

class). In this program the class name is ABC .We declare three data members a,b,c and member

functions read, process and show.We have to add two numbers. In main f() we create one object i.e,o1

SOURCE CODE:

#include

#include


{


public:


{

cout


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cout


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PROGRAM-9: Wap to demonstrate the concept of classes and objects.


EXPLAINATION: In this program the class name is ABC .We declare two data members a,b and member

functions read and process.We have to show greater between two numbers. In main f() we create one

object i.e,o1

SOURCE CODE:

#include

#include


{

int a,b; //data member

public:


{

couta; //standard input

coutb; //standard input

}

void show() //member f()

{

If(a>b) //if loop

{

cout


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{

cout


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OUTPUT:


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PROGRAM-10: WAP in C++ to demonstrate the concept of creating objects.


EXPLAINATION: In this program the class name is ABC .We declare data member i.e, n and member

functions read and process.We have to show whether the number is even or odd. In main f() we create

two objects i.e,o1 and o2

SOURCE CODE:

#include

#include


{

int n; //data member

public: //access level


{

coutn; //standard input

}


{

if(n%2==0) //if loop

{

cout


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}

};


{

ABC o1,o2; //creation of object

cout


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PROGRAM-11: WAP in C++ to access the data member and member function.

INPUT : Enter any value of a.

EXPLAINATION:Here class name is ABC,data members are a&b, member functions are read, process and

show. We have to find the square of a number.

SOURCE CODE:

#include

#include


{


public:


{

cout


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};


{

ABC o1; //creation of object

o1.read(); //invoke member f()

o1.process();

o1.show();

return 0; //return type

} //end of program

OUTPUT:


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PROGRAM-12: WAP in C++ to demonstrate the concept of array of object.

INPUT : Enter any value of five item nos and price.

EXPLAINATION:Array is a collection of similar type of data elements.In this program the class name is

item.We declare data member i.e,itemno &price and member function read&show .We have to show

item no.and price of five items. In main f() we take array of object o1[5].

SOURCE CODE:

#include

#include

class item //name of class

{

int itemno; //data members

float price;

public:

void read(int i,float p) //member f()

{

itemno=i;

price=p;

}


{

cout


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int itno;

float pri;

item o1[5]; //array of object

cout


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OUTPUT:


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PROGRAM-13: WAP in C++ to add two diff. minutes and hours using object as f() argument.

INPUT : Enter any value of hours and minutes.

EXPLAINATION: Here the class name is time, data member are hours and minutes, member functions

are read &show. In this program we have to pass object as argument in place of values.

SOURCE CODE:

#include

#include

class time //name of the class

{

int hours; //variable declaration

int minutes;

public: //member function

void read(int h,int m) //temporary variable/argument

{

hours=h;

minutes=m;

}

void show() //member function

{

cout


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hours=t1.hours+t2.hours;

minutes=t1.minutes+t2.minutes;

h1=minutes/60;

m1=minutes%60;

hours=hours+h1;

minutes=m1;

}


{

time t1,t2,t3; //creation of object

cout


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OUTPUT:


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PROGRAM-14: WAP in C++ to add two english distances using object as f() argument.

INPUT : Enter any value of hours and minutes.

EXPLAINATION: Here the class name is distance, data members are feet and inches, member functions

are read &show. In this program we have to pass object as argument in place of values.

SOURCE CODE:

#include

#include

class distance //name of the class

{

int feet; //variable declaration

int inches;

public: //member function

void read(int i,int j) //temporary variable/argument

{

feet=i;

inches=j;

}


{

cout


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feet=d1.feet+d2.feet;

inches=d1.inches+d2.inches;

f1=inches/12;

inc1=feet%12;

feet=feet+f1;

inches=inc1;

}


{

distance d1,d2,d3; //creation of object

cout


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OUTPUT:


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PROGRAM-15: WAP in C++ to demonstrate the concept of inline function.

INPUT : Enter any value of a & b.

EXPLAINATION:Inline functions are used to remove the overheads by pasting the calculation

in every function.Here in this program we take abc as class name ,two access

levels private & public ,two member f()s as read & show .

SOURCE CODE:

#include

#include

class abc //name of class

{



void read() //member f()

{

cout


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cout


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PROGRAM-16: WAP in C++ to demonstrate the defination of member f()'s of a class.


EXPLAINATION:Here in this program we have to add two numbers. Taking add as class name ,two

access levels private & public ,two member f()s as read & show .

SOURCE CODE:

#include

#include

class add //name of class

{

int a,b,c; //variable declaration

public:

void input(); //member function declaration

void process();

void output();

};

void add::input() //member f() defination

{

cout


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}

void add::output() //member f() defination

{

cout


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PROGRAM-17: WAP in C++ to demonstrate the concept of friend function.


EXPLAINATION: Friend function are used to access the data member.In this program the class name is

abc.We declare data member i.e, a & b and member function read .We have to add two numbers. In

main f() we create one objects i.e,o1.

SOURCE CODE:

#include

#include


{



void read() //member funnction

{

cout


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int main() //beginning of main()

{

int c; //declaration

abc o1; //creation of object

o1.read(); //invoke M F()

c=func(o1); //function call

cout


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PROGRAM-18: WAP in C++ to demonstrate the concept of returning object.

INPUT : Enter any two feet and inches.

EXPLAINATION: Here the class name is distance, data members are feet and inches, member functions

are read &show. In this program we have to pass object as argument in place of values and returning

object.

SOURCE CODE:

#include

#include

class distance //name of class

{

int feet; //data member

int inches;

public:

void read(int f, int i) //member f()

{

feet=f;

inches=i;

}


{

cout


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distance dd3;

dd3.feet=dd1.feet+dd2.feet;

dd3.inches=dd1.inches+dd2.inches;

if(dd3.inches>=12)

{

dd3.feet++;

dd3.inches=dd3.inches-12;

}

return dd3; //returning object

}

int main() //begining of main()

{

distance d1,d2,d3; //creation of object

cout


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OUTPUT:


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PROGRAM-19: WAP in C++ to demonstrate the concept of default and parameterised constructor.

EXPLAINATION:Constructor are special type of member functions. Constructors are always public. Here

the class name is abc,one default constructor,one parameterised constructor we have just to show the

values.

SOURCE CODE:

#include

#include


{



abc() //default constructor

{

a=4;

b=3;

}

abc(int i,int j) //parameterised constructor

{

a=i;

b=j;

}


{

cout


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};


{

cout


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PROGRAM-20: WAP in C++ to demonstrate the concept of destructors.

EXPLAINATION: Destructors are also special type of member functions. Here the class name is alpha,

Constructor nameis alpha() and destructor name is ~alpha().

SOURCE CODE:

#include

#include

int count=0;

class alpha //name of class

{

public:

alpha() //constructor

{

count++; //increment

cout


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alpha a2;

//destructor invoke automatically


} //end of program

OUTPUT:


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PROGRAM-21: WAP to count the no. of object in a program by using static data member and static

member f().

EXPLAINATION: Static member functions are those functions which contain only static data members

and static member functions . Here in this program we have to count the no. of objects in a program.

SOURCE CODE:

#include

#include

class x //name of class

{

int itemno; //data member

float price;

static int count; //static data member


void read(int i,float f) //member function

{

itemno=i;

price=f;

count++;

}


{

cout


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cout


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OUTPUT:


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PROGRAM-22: WAP in c++ to demonstrate the concept of copy constructor.

EXPLAINATION: Copy constructor copies values from main function to member function.Here the class

name is abc.In this program we use three constructors one is default constructor,second is

parameterised constructor and third is copy constructor.

SOURCE CODE:

#include

#include


{

int i,j; //variable declaration

public: //member f()

abc() //default constructor

{

i=5;

j=4;

}

abc(int a, int b) //parameterised constructor

{

i=a;

j=b;

}

abc(abc&s) //copy constructor

{

i=s.i;

j=s.j;

}


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void display() //member f()

{

cout


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OUTPUT:


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PROGRAM-23: WAP in c++ to demonstrate the concept of single inheritance.

INPUT : Enter any two numbers.

EXPLAINATION: When a derived class inherits the features of base class,it is single inheritance. Here we

take two classes one is base and other is derived class.We have to add two numbers.

SOURCE CODE:

#include

#include

class base //name of class

{

private: //access level

int a; //data member

protected:

int b;

public:


{


}

void get()

{

coutb;

}

void show()

{


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cout


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}

};


{

cout


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PROGRAM-24: WAP in c++ to demonstrate the concept of multiple inheritance.

INPUT : Enter the value of a & b.

EXPLAINATION: When a derived class inherits the features of more than one base class then it is

multiple inheritance.Here we take two base classes and one derived class. In this program we have to

add two numbers.

SOURCE CODE:

#include

#include

class base1 //name of class

{

protected: //access level

int a; //data member

public:


{


}

void show()

{

cout


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int b;

public:

void get()

{

coutb;

}

void put()

{

cout


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}

};


{

cout


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PROGRAM-25: WAP in C++ to demonstrate the concept of multilevel inheritance.

INPUT : Enter the value of a & b.

EXPLAINATION:The transitive nature of inheritance is reflected by this form of inheritance. When a

subclass inherits from a class that itself inherits from another class, it is known as multilevel inheritance.

SOURCE CODE:

#include

#include

class student //name of class

{

protected: //access level

int rollno; //data member

char name[20];

public:


{

coutrollno; //standard input

coutname;

}

void show()

{

cout


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class student_details:public student

{

protected:

int marks[3];

public:

void read()

{

student::read();

coutmarks[0];

coutmarks[1];

coutmarks[2];

}

void show()

{

student::show();

cout


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public:

void read()

{

student_total::read();

}

void cal()

{

total=marks[0]+marks[1]+marks[2];

}

void show()

{

student_details::show();

cout


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OUTPUT:


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PROGRAM-26: WAP in C++ to demonstrate the concept of hierarchical inheritance.

INPUT : Enter any roll no., name and three subjects marks.

EXPLAINATION: When many subclasses inherit from a single base class, it is known as hirarchical

inheritance.

SOURCE CODE:

#include

#include

class stud_basic //NAME OF CLASS

{

private: //ACCESS LEVEL

char name[20]; //DATA MEMBER

int rollno;

public:

void read() //MEMBER FUNCTION

{

coutrollno; //STANDARD INPUT

coutname;

}

void show()

{

cout


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{

private:

float marks[30],marks_obt;

float per;

public:

void input()

{

stud_basic::read();

cout


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{

marks_obt=marks[0]+marks[1]+marks[2];

per=float(marks_obt/300)*100;

}

};

class stud_fitness:public stud_basic

{

private:

float height,weight;

public:

void read()

{

stud_basic::read();

cout


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};

void main() //BEGINNING OF MAIN F()

{

cout


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PROGRAM-27: WAP in C++ to demonstrate the concept of hybrid inheritance.

EXPLAINATION: When a derived class inherits the features from multiple base classes which again

inherits the featurs of a single base class then it is known as hybrid inheritance.Here we take four classes

,in this program we have to find the percentage of all the marks obtained.

SOURCE CODE:

#include

#include

class stud_basic //name of class

{

private: //access level

char name[20]; //data member

int rollno;

public:


{

coutrollno; //standard input

coutname;

}

void show()

{

cout


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class stud_acd_marks:public stud_basic

{

protected:

float marks[3];

public:

void read()

{

stud_basic::read(); //call read of base

cout


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protected:

float score;

public:

void read()

{

cout


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{

stud_acd_marks::show();

sports::show();

cout


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OUTPUT:


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PROGRAM-28: WAP in c++ to demonstrate the concept of unary operator overloading.

EXPLAINATION: Let us consider the unary plus operator. A plus operator when used as a unary,takes

just one operand. The given program shows how the unary plus operator is overloaded.

SOURCE CODE:

#include

#include


{

int count; //declaration


abc()

{

count=0;

}


{

cout


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{

cout


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PROGRAM-29: WAP in C++ to demonstrate the concept of binary operator overloading.

INPUT : Enter any values of hours and minutes.

EXPLAINATION: Operator overloading means to do additional job to an operator a special function with

that operator called as operator overloading. The same mechanism of unary operator can be used to

overload a binary operator.The f()notation c=sum(a,b);can be replaced by a natural looking expression

c=a+b;

SOURCE CODE:

#include

#include

class time //name of class

{

int hours; //data member

int minutes;



{

couthours; //standard input

coutminutes;

}


{

cout


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{

time tt3;

tt3.hours=hours+tt2.hours;

tt3.minutes=minutes+tt2.minutes;

if(tt3.minutes>=60)

{

tt3.hours++;

tt3.minutes=tt3.minutes-60;

}

return tt3;

}

};

int main()

{

cout


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OUTPUT:


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Program-30: WAP in C++ to demonstrate the concept of function overloading.

INPUT : Enter any value of a,b,c,g,h.

Explaination: Overloading refers to the use of same thing for different purposes. C++ also permits

overloading of functions. This means that we can use the same functionname to create functions that

perform a variety of different tasks, using the concept of function overloading. For e.g: In this program

an overloaded add() function handles different types of data as shown below:

Source Code:

#include

#include

int main() //beginning of main

{

cout


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cin>>h;

d=add(a); //function call

e=add(a,b);

f=add(a,b,c);

i=add(g,h);

cout


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int add(int p,int q,int r)

{

int s;

s=p+q+r;

return s;

}

float add(float m,float n)

{

float o;

o=m+n;

return o;

}

OUTPUT:


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PROGRAM-31: WAP in C++ to demonstrate the concept of virtual f()'s.

EXPLAINATION: How we do achieve polymorphism? It is achieved using what is known as virtual

functions. When we use the same f()name in both the base&derived classes, the f() in base class is

declared as virtual using the keyword virtual preceding its normal declaration.

SOURCE CODE:

#include

class base //name of class

{


void display() //member function

{

cout


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{

coutshow();


} //end of program


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OUTPUT:


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PROGRAM-32: WAP in C++ to demonstrate the concept of templates.

EXPLAINATION: Templates is a new concept which enable us to define generic programming. Generic

programming is an approach where generic types are used as parameters in algorithms so that they

work for a variety of suitable data types and data structure.

SOURCE CODE:

#include

template

class test //name of class

{

t1 a;

t2 b;


test(t1 x,t2 y)

{

a=x;

b=y;

}


{

cout


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{

cout


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PROGRAM-33: WAP in c++ to demonstrate the concept of files and streams.

INPUT : Enter ur name and roll no.

EXPLAINATION: Files are used to store the output of program.

SOURCE CODE:

#include

#include


{

char name[20]; //variable declaration

int rollno;

cout


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} //end of program

OUTPUT:


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PROGRAM-34: WAP in C++ to demonstrate the concept of get and put.

INPUT : Enter ur name.

EXPLAINATION: The functions get() and put() are member functions of the file stream class fstream.get()

is used to read a single character from the file.put() is used to write a single character to the output file.

SOURCE CODE:

#include

#include

int main() //beginning of main function

{

char a[20]; //variable declaration

cout


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OUTPUT:

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