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Title: Basics of Objected Oriented Programming in C++
Description: This will explain you how to define classes and make use of them in C++. These programs will explain the easy ways coded on Microsoft Visual Studio. The output of programs has also been there in the uploaded notes.
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[AYESHA KHAN] Cs-030

OOP ASSIGNMENT

PROGRAM #1:

(Programs in class & homework)

Class Bankaccount:
Source code:
#include
#include ...
setid(1);

Oop assignment#1 SUBMITTED TO MA’AM FAUZIA

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[AYESHA KHAN] Cs-030

}

b1
...
display();
b2
...
setbalance(6000);
b2
...
withdraw(1000);
b1
...
withdraw(8000);
b2
...
deposit(2050);
if(b1
...
getbalance())
cout<<"equal";
getch();

Output:

PROGRAM #2:
Class Student:
Source code:
#include
#include ...
cal_per();
s2
...
display();
s2
...
h>
usingnamespace std;
class bankaccount
{
private:
int id;
double balance;
public:
bankaccount();
bankaccount(int i,double b);
void display();
int getid();
double getbalance();
void setid(int i);
void setbalance(double bal);
void withdraw(double amt);
void deposit(double amt);
};
bankaccount::bankaccount()
{
cout<<"Enter id:";
cin>>id;
cout<<"Enter balance:";
cin>>balance;
}
bankaccount::bankaccount(int i,double b)
{
id=i;
balance=b;
}

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[AYESHA KHAN] Cs-030
void bankaccount::display()
{ cout<<"Id:"<int bankaccount::getid()
{ return id; }
double bankaccount::getbalance()
{ return balance;}
void bankaccount::setid(int i)
{ id=i; }
void bankaccount::setbalance(double bal)
{
if(bal>500)
balance=bal;
else
cout<<"Error"<}
void bankaccount::withdraw(double amt)
{
if(balance>amt+500)
balance-=amt;
else
cout<<"Error"<}
void bankaccount::deposit(double amt)
{
balance+=amt;
}
void main()
{
bankaccount b1,b2;
b1
...
display();
b1
...
setbalance(30000);
b1
...
setid(2);
b2
...
display();
b1
...
display();
b2
...
display();
b1
...
getbalance()==b2
...
h>
usingnamespace std;
class rectangle
{
private:
float length,width;
double area;
public:
rectangle();
rectangle(float l,float w);
void show();
float getlength();
float getwidth();
void setlength(float l);
void setwidth(float w);
void cal_area();
};
rectangle::rectangle()
{
cout<<"Enter length:";
cin>>length;
cout<<"Enter width:";
cin>>width;
}
rectangle::rectangle(float l,float w)

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[AYESHA KHAN] Cs-030
{

length=l;
width=w;

}
void rectangle::show()
{
cout<<"Length:"<cout<<"Width:"<cout<<"Area of rectangle="<}
float rectangle::getlength()
{ return length; }
float rectangle::getwidth()
{ return width; }
void rectangle::setlength(float l)
{ length=l; }
void rectangle::setwidth(float w)
{ width=w; }
void rectangle::cal_area()
{
area=length*width;}
void main()
{
rectangle r1(3
...
9);
rectangle r2;
r1
...
cal_area();
r1
...
show();
getch();
}

Output:

Oop assignment#1 SUBMITTED TO MA’AM FAUZIA

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[AYESHA KHAN] Cs-030

PROGRAM # 5:
Calss Bankaccount (with copy constructor):
Source code:

#include
#include ...
id;
balance=b
...
display();
b2
...
display();
b4
...
setid(1);
b1
...
display();
b2
...
setbalance(6000);
b2
...
withdraw(1000);
b1
...
withdraw(8000);
b2
...
deposit(2050);
if(b1
...
getbalance())
cout<<"equal";
getch();
}

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[AYESHA KHAN] Cs-030
Output:

PROGRAM # 6:
Class Employee:
Source code:
#include
#include ...
name;
id=e
...
bassicpay;
allownces=e
...
total;
}
void employee::show()
{
cout<<"Name:"<l pay:"<}
void employee::calculatepay()
{
total=bassicpay+allownces-0
...
calculatepay();
e2
...
show();
e2
...
h>
#include
usingnamespace std;
class employee
{
string name;
int id;
staticint count;
double bassicpay,allownces,total;
public:
employee();
employee(string n,double bp, double a);
employee(employee &e);
void show();
void calculatepay();

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[AYESHA KHAN] Cs-030
void setname(string n);
void setid(int i);
void setbassicpay(double bp);
void setallownces(double a);
void getname(string *p);
int getid();
double getbassicpay();
double getallownces();

};
int employee::count=0;
employee::employee()
{
count++;
id=count;
cout<<"Enter name:";
cin>>name;
cout<<"Enter bassic pay:";
cin>>bassicpay;
cout<<"Enter allownces:";
cin>>allownces;
}
employee::employee(string n,double bp, double a)
{
count++;
name=n;
id=count;
bassicpay=bp;
allownces=a;
}
employee::employee(employee &e)
{
name=e
...
id;
bassicpay=e
...
allownces;
total=e
...
2*bassicpay;
}
void employee::setname(string n)
{ name=n;}

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[AYESHA KHAN] Cs-030
void employee::setid(int i)
{ id=i;}
void employee::setbassicpay(double bp)
{ bassicpay=bp;}
void employee::setallownces(double a)
{ allownces=a;}
void employee::getname(string *p)
{ p=&name;}
int employee::getid()
{return id;}
double employee::getbassicpay()
{return bassicpay;}
double employee::getallownces()
{return allownces;}
void main()
{
employee e1,e2("Nimra",25000,10000);
e1
...
calculatepay();
e1
...
show();
getch();

Output:

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[AYESHA KHAN] Cs-030

PROGRAM # 8:
Class Complex No:
Source code:

#include
#include ...
Real;
Imaginary=c
...
Real=Real+c
...
Imaginary=Imaginary+c
...
Real=Real-c
...
Imaginary=Imaginary-c
...
Real=Real*c
...
Imaginary;
r
...
Imaginary+c
...
Real==Real&&c
...
5),r(0,0);
c1
...
display();
c1
...
magnitude();
r=c1
...
display();
r=c1
...
display();
r=c1
...
display();
cout<<"Compare c1 & c2:"< ...
h>
usingnamespace std;
class abc
{
int _x;
staticint count;
public:
abc(int x);
~abc();
int getx();
};
int abc::count=0;
abc::abc(int x)
{
count++;
_x=x;
}
abc::~abc()
{
count--;
cout<<"Destroying object"<<_x<getch();
}
int abc::getx()

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[AYESHA KHAN] Cs-030
{ return _x;}
void main()
{
cout<<"Inside main"<abc obj1(2);
abc obj2(3);
if(obj1
...
getx())
{
cout<<"Inside if"<abc obj3(8);
}
}

Output:

PROGRAM # 10:
Pointers to objects:
Source code:
#include
#include ...
show();
abc *ob=new abc("object 2");
delete ob;

Output:

PROGRAM # 11:
Array of object:
Source code:
#include
#include ...
Real;
Imaginary=c
...
magnitude();
cout<<"Magnitude of "< ...
getimag()<<"i is"<}
Complex_No array2[3]={Complex_No(2,3),Complex_No(1,2),Complex_No(4,5)};
getch();
}

Output:

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[AYESHA KHAN] Cs-030

PROGRAM # 12:

Pointer to an array:
Source code:

//pointer to array
#include
#include ...
Real;
Imaginary=c
...
h>
#include
usingnamespace std;
class Complex_No
{
float Real;
float Imaginary;
public:
Complex_No();
Complex_No(float R,float I);
Complex_No(Complex_No & c);

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[AYESHA KHAN] Cs-030
void display();
void setreal(float r);
void setimag(float i);
float magnitude();
float getreal();
float getimag();
};
Complex_No::Complex_No(float R,float I)
{
Real=R;
Imaginary=I;
}
Complex_No::Complex_No()
{
cout<<"Enter real part:";
cin>>Real;
cout<<"Enter imaginary part:";
cin>>Imaginary;
}
Complex_No::Complex_No(Complex_No & c)
{
Real=c
...
Imaginary;
}
void Complex_No::display()
{
cout<<" The complex number is "<}
float Complex_No::magnitude()
{
float mag;//magnitude
mag=sqrt(pow(Real,2)+pow(Imaginary,2));
return mag;
}
void Complex_No::setreal(float r)
{ Real=r;}
void Complex_No::setimag(float i)
{ Imaginary=i;}
float Complex_No::getreal()
{return Real;}
float Complex_No::getimag()
{return Imaginary;}
void main()
{
Complex_No arrp[3];
Complex_No *p;
p=arrp;//or p=&arrp[0]
float m=p->magnitude();

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[AYESHA KHAN] Cs-030

}

p->display();
p++;
m=p->magnitude();
p->display();
p=arrp;
for(int i=0;i<3;i++)
{
p->display();
p++;
}
getch();

Output:

PROGRAM # 14:
This pointer:
Source code:
#include
#include ...
show();
obj1
...
h>
usingnamespace std;
class abc
{
int _x;
public:
abc(int x);
abc();
void show();
};
abc::abc(int x)
{
_x=x;
}
abc::abc()
{
cout<<"Enter x:";
cin>>_x;
}
void abc::show()
{ cout<<"Value of x is "<<_x;}
void main()
{
abc obj(2);
abc arr[5];
obj
...
show();

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[AYESHA KHAN] Cs-030
arr[1]
...
h>
using namespace std;
class Student{
private:
char Name[50];
int Rollno;
double Marks[5];
float percentage;
public:
Student()
{
std::cout<<"Enter name of student:";
std::cin>>Name;
std::cout<<"Enter roll no:";

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[AYESHA KHAN] Cs-030
std::cin>>Rollno;
for(int i=0;i<5;i++)
{
std::cout<<"Enter marks for subject#"<std::cin>>Marks[i];
}
std::cout<<"Enter percentage:";
cin>>percentage;
}
/* void Percentage()
{
int sum=0;
for(int i=0;i<5;i++)
{
sum+=Marks[i];
}
percentage=(sum/500
...
Percentage();
}
*/
for(int j=0;j<3;j++)
{

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[AYESHA KHAN] Cs-030
s[j]
...
Real = Real + C
...
Imaginary = Imaginary + C
...
Display();
C2
...
Display();
C3
...
Add(C3);
C4
...
value=0;
}
int main()
{
Counter C;
C
...
Increment();
C
...
Decrement();
C
...
Increment();
C
...
h>
# include
using namespace std;
class Student{
private:
char Name[50];
int Rollno;
double Marks[5];
float percentage;
public:
Student()//Default constructor/input constructor
{
std::cout<<"Enter name of student:";
std::cin>>Name;
std::cout<<"Enter roll no:";
std::cin>>Rollno;
for(int i=0;i<5;i++)
{
std::cout<<"Enter marks for subject#"<std::cin>>Marks[i];
}
std::cout<<"Enter Percentage:";
std::cin>>percentage;
}
Student(char *name,int r_no,double marks[5],float per)//parametrized constructor
{
strcpy(Name,name);
Rollno=r_no;
for(int i=0;i<5;i++)
{
Marks[i]=marks[i];
}
percentage=per;
}
Student(Student &obj)//copy constructor
{
strcpy(Name, obj
...
Rollno;

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[AYESHA KHAN] Cs-030
int i;
for (i = 0; i<5; i++)
{
Marks[i] = obj
...
0)*100;
return percentage;
//std::cout<<"Percentge is:"<}
void Grade()
{
if(Calculate_Percentage()>=90)
{
cout<<"Grade A";
}
else if(Calculate_Percentage()>=80)
{
cout<<"Grade B";
}
else if(Calculate_Percentage()>=70)
{
cout<<"Grade C";
}
else if(Calculate_Percentage()>=60)
{
cout<<"Grade D";
}
else if(Calculate_Percentage()<60)
{
cout<<"Grade F";
}
}

void display()
{
std::cout<<"RECORD OF STUDENT"<<"\n";
std::cout<<"Name of student is:"<std::cout<<"Roll no is:"<std::cout<<"Marks are:"<<"\n";
for(int i=0;i<5;i++)
{
std::cout<<"Subject#"<}
std::cout<<"\n";
std::cout<<"Percentage is:"<Grade();
cout<<"\n\n";
}

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[AYESHA KHAN] Cs-030
};
int main()
{
Student *s;
char name[50];
int r_no;
double marks[5];
float per;
s=new Student [5];
for(int i=0;i<5;i++)
{
s[i]
...
name;

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[AYESHA KHAN] Cs-030
Rollno = s
...
Marks[j];
Percentage = s
...
display();
S2
...
h>
usingnamespace std;
class A
{
int _x;
public:
A(int x);
A();
int getx();
void show();
};
class B:public A
{

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[AYESHA KHAN] Cs-030

public:

int _y;
B();
void show();
int gety();

};
A::A(int x)
{ _x=x;}
A::A()
{ cout<<"Enter x:";
cin>>_x;}
int A::getx()
{ return _x; }
void A::show()
{ cout<<"x="<<_x<B::B()
{ cout<<"Enter y:";
cin>>_y;}
int B::gety()
{ return _y;}
void B::show()
{ A::show();
cout<<"y="<<_y<void main()
{
A obj1;
B obj2;
//obj1
...
getx();
obj1
...
gety();//error gety() is derived class function
//int t=obj2
...
getx();
//m=obj2
...
show();
getch();
}

Output:

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[AYESHA KHAN] Cs-030

PROGRAM # 24:
Inheritance:
(use of “protected” access specifier):
Source code:
#include
#include ...
getx();
t=obj1
...
show();
t=obj2
...
gety();
t=obj2
...
show();
obj2
...
getx();
//t=obj3
...
getw();
obj3
...
show();
getch();
}

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[AYESHA KHAN] Cs-030

Output:

PROGRAM # 25:
Inheritance parametarized constructor:
Source code:
#include
#include ...
show();
obj2
...
h>
#include
usingnamespace std;
class vector2D
{
protected:
float _x;
float _y;
public:
vector2D(float x,float y);
void display();
vector2D add(vector2D v);
bool compare(vector2D v);
};
class vector3D:public vector2D
{
float _z;
public:
vector3D(float x,float y,float z);
void display();
vector3D add(vector3D v);
bool compare(vector3D v);
};
vector2D::vector2D(float x,float y)

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[AYESHA KHAN] Cs-030
{

_x=x;
_y=y;

}
void vector2D::display()
{
cout<<_x<<"i+"<<_y<<"j"<}
vector2D vector2D::add(vector2D v)
{
vector2D r(0,0);
r
...
_x;
r
...
_y;
return r;
}
bool vector2D::compare(vector2D v)
{
if(v
...
_y==_y)
returntrue;
elsereturnfalse;
}
vector3D::vector3D(float x,float y,float z):vector2D(x,y)
{ _z=z;}
void vector3D::display()
{
cout<<_x<<"i+"<<_y<<"j+"<<_z<<"k"<}
vector3D vector3D::add(vector3D v)
{
vector3D r(0,0,0);
r
...
_x;
r
...
_y;
r
...
_z;
return r;
}
bool vector3D::compare(vector3D v)
{
if(v
...
_y==_y&& v
...
9,7
...
display();
v2
...
add(v2);

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[AYESHA KHAN] Cs-030

}

cout<<"Result=";
r1
...
compare(v2)<v3
...
display();
r2=v3
...
display();
cout<<"Compare v3 and v4:"<
Title: Basics of Objected Oriented Programming in C++
Description: This will explain you how to define classes and make use of them in C++. These programs will explain the easy ways coded on Microsoft Visual Studio. The output of programs has also been there in the uploaded notes.
Buy These NotesPreview