om institute of technology & management juglan, … · lab manual object oriented programming using...
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OM INSTITUTE OF TECHNOLOGY & MANAGEMENT
JUGLAN, HISAR-125001
LAB MANUAL
Object Oriented Programming Using ‘C++’
BCA-231
DEPARTMENT OF COMPUTER APPLICATIONS
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Hardware & Software requirment
Hardware:-Any operating system like UNIX,LINUX and Windows. Machine must be
supported 0-127 ASCII char format.
Software:-
Like c programs, c++ programs can be created using any text editor. But theremust be a compiler which convert high level language into machine language. Such as Turboc++ and Borland c++. These also provide an integrated environment for developing and editingprograms.
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INDEX
Object Oriented Programming Using ‘C++’
BCA-231
Sr.No Program Name Page No.1. Introduction to C++. 4
2. Write a program in C++ to print average of two numbers. 5
3. Write a program in C++ of using scope resolution operator. 6-7
4. Write a program in C++ of using inline function. 8-9
5. Write a program in C++ of using class. 10-11
6. Write a program in C++ to perform nesting of memberfunctions.
12-14
7. Write a program in C++ of using friend function. 15-16
8. Write a program in C++ of using constructors in class. 17-18
9. Write a program in C++ of using destructors. 19-2010. Write a program in C++ of using overloading unary
operator.21-23
11. Write a program in C++ of using overloading binaryoperators.
24-26
12. Write a program in C++ of using single inheritance. 27-29
13. Write a program in C++ of using multilevel inheritance. 30-33
14. Write a program in C++ of using multiple inheritance. 34-37
15. Write a program in C++ of using hybrid inheritance. 38-41
16. Write a program in C++ of using virtual function. 42-43
17. Write a program in C++ to perform random access. 44-45
18. Write a program in C++ of using operations on binary files. 46-47
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Introduction to c++
C++ is an object-oriented programming language. It was developed by Bjarne Stroustrup atAT&T Bell laboratories.
C++ is an extension of C with a major addition of the class construct feature of Simula67.Stroustrup initially called the new language “C with class”.The idea of C++ comes from the c increment operator ++.
Basic concepts of object-oriented programming
1. Objects.2. Classes.3. Data abstraction and encapsulation.4. Inheritance.5. Polymorphism.6. Dynamic binding.7. Message passing.
Applications of c++
1. Since c++ allows us to create hierarchy-related objects.2. It is expected that c++ will replace C as a genral-purpose language in the near
future.
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/*wap to print the average of two number.*/
#include
#include
void main()
{
int num1,num2;float ave;
clrscr();
coutnum1>>num2;
ave=float(num1+num2)/2;
cout
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/*wap in c++ of using scope resolution operator.*/
#include
#include
int b=100;
void main()
{
clrscr();
int b=50;
{
int bh=b;
int b=25;
cout
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Output
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/*wap in c++ of using inline function*/
#include
#include
class New
{
public:
inline long mul(int num1,int num2)
{
return num1*num2;
}
long add(int num1,int num2);
};
inline long new::add(int num1,int num2)
{
return num1+num2;
}
void main()
{
int a,b;
clrscr();
couta>>b;
New obj;
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cout
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/*wap in c++ of using class.*/
#include
#include
class Demo
{
int num1,num2;
public:
void get()
{
coutnum1>>num2;
}
void set()
{
cout
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getch();
}
Output
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/*wap to perform nesting of member functions.*/
#include
#include
class Demo
{
int a, b;
public:
void getdata();
int largest();
void display();
};
void Demo :: getdata()
{
couta>>b;
}
int Demo :: largest()
{
if(a>=b)
{
return a;
}
else
{
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return b;
}
}
void Demo :: display()
{
cout
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Output
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/*wap in c++ of using friend function*/
#include
#include
class Sample
{
int a,b;
public:
void Setvalue()
{
a=25;
b=50;
}
friend float mean(Sample S)
};
float mean(Sample S)
{
return float(S.a+S.b)/2.0;
}
int main()
{
clrscr();
Sample X;
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X.Setvalue();
cout
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/*wap in c++ of using constructor*/
#include
#include
class Demo
{
public:
Demo()
{
cout
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Output
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/*wap in c++ of using destructors*/
#include
#include
int count=0;
class Alpha
{
public:
Alpha()
{
count++;
cout
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cout
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/*wap in c++ of using overloading unary operator*/
#include
#include
class Space
{
int x,y,z;
public:
void Getdata(int a, int b, int c);
void Display(void);
void operator -();
};
void Space :: Getdata(int a, int b, int c)
{
x=a;
y=b;
z=c;
}
void Space :: Display(void)
{
cout
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{
x=-x;
y=-y;
z=-z;
}
void main()
{
clrscr();
Space S;
S.Getdata(10,-20,30);
cout
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Output
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/*wap in c++ of using overloading binary operator*/
#include
#include
class Demo
{
float x,y;
public:
Demo()
{}
Demo(float real,float img)
{
x=real;
y=img;
}
Demo operator +(Demo);
void show();
};
Demo Demo::operator +(Demo ob)
{
Demo temp;
temp.x=x+ob.x;
temp.y=y+ob.y;
return (temp);
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}
void Demo::show()
{
cout
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Output
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/*wap in c++ of using single inheritance.*/
#include
#include
class B
{
int a;
public:
int b;
void Get_ab();
int Get_a();
void show_a();
};
class D : public B
{
int c;
public:
void Mul();
void Display();
};
void B :: Get_ab()
{
a=5;
b=10;
}
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int B :: Get_a()
{
return a;
}
void B :: show_a()
{
cout
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d.show_a();
d.Display();
d.b=20;
d.Mul();
d.Display();
getch();
return 0;
}
Output
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/*wap in c++ of using multilevel inheritance.*/
#include
#include
class Student
{
protected:
int roll;
public:
void get_num(int);
void put_num();
};
void Student::get_num(int a)
{
roll=a;
}
void Student::put_num()
{
cout
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public:
void get_mks(float,float);
void put_mks();
};
void Test::get_mks(float a,float b)
{
sub1=a;sub2=b;
}
void Test::put_mks()
{
cout
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cout
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Output
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/*wap in c++ of using multiple inheritance.*/
#include
#include
class Student
{
protected:
int roll;
public:
void get_num(int);
void put_num();
};
void Student::get_num(int a)
{
roll=a;
}
void Student::put_num()
{
cout
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public:
void get_mks(float,float);
void put_mks();
};
void Test::get_mks(float a,float b)
{
sub1=a;sub2=b;
}
void Test::put_mks()
{
cout
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cout
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Output
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/*wap in c++ of using Hybrid inheritance.*/
#include
#include
class Student
{
protected:
int roll;
public:
void get_num(int);
void put_num();
};
void Student::get_num(int a)
{
roll=a;
}
void Student::put_num()
{
cout
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public:
void get_mks(float,float);
void put_mks();
};
void Test::get_mks(float a,float b)
{
sub1=a;sub2=b;
}
void Test::put_mks()
{
cout
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{
cout
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coutr;
couts1>>s2;
obj.get_score();
obj.get_num(r);
obj.get_mks(s1,s2);
obj.display();
getch();
}
Output
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/*wap in c++ of using virtual function.*/
#include
#include
class Base
{
public:
virtual void display()
{
cout
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ptr=&obj;
ptr->display();
getch();
}
Output
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/*wap in c++ of using I\O operation on characters.*/
#include
#include
void main()
{
int count=0;
char c;
clrscr();
cout
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Output
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/*wap in c++ of using I/O operation on binary files.*/
#include
#include
#include
#include
void main()
{
clrscr();
float height[4]={55.55,66.6,77.7,88.8};
ofstream outfile;
outfile.open("c:\\mca.dat");
outfile.write((char *)&height,sizeof(height));
outfile.close();
for(int i=0;i
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getch();
}
Output