Array of Object and Function Overloading and Operator Overloading in C++

Array of Object

         

          #include

          #include

          class person

          {

          char name[10];

          int age;

          public:

          void getperson(void)

          {

          cout<<"Enter the name and age\n";

          cin>>name>>age;

          }

          void dispersion(void)

          {

          cout<<"\n"<

          }

          };

          void main()

{

person ps[10];

int n,i;

clrscr();

cout<<"Enter how many person\n";

cin>>n;

cout<<"Enter"<

for(i=0;i

{

ps[i].getperson();

}

cout<<"\n**************************************";

cout<<"\n Name \t Age";

cout<<"\n **************************************";

for(i=0;i

{

ps[i].disperson();

cout<<"\n ***************************************";

getch();

}

Output

         

         Enter how many people?

          2

Enter 2 person details

Enter the name and age

Ragul

23

Enter the name and age

Ravi

25

************************************

Name                    Age

************************************

Ragul                    23

Ravi                     25

***********************************

Function Overloading

          

          #include

          #include

          class areaofshapes

          {

public:

void area(int a)

{

cout<<"Area of square: "<<(a*a);

}

void area(int l, int b)

{

cout<<"Area of rectangle:"<<(l*b);

}

void area(float r)

{

cout<<"Area of circle: "<<(3.14*r*r);

}

void area(float w, float h)

{

cout<<" Area of cylinder         : "(3.14*w*w*h);

}

};

void main()

{

int ch;

areaofshapes k;

clrscr();

cout<<"1. Square \n 2. Rectangle \n 3. Circle\n 4. Cylinder\n";

cout<<"Enter ur choice\n";

cin>>ch;

switch()

{

case 1:

int a;

cout<<"Enter side of square";

cin>>a;

k.area(a);

break;

case 2;

int l,b;

cout<<" Enter the length and breadth of rectangle";

cin>>l>>b;

k.area(l,b);

break;

case 3:

float r;

cout<<" Enter the radius circle";

cin>>r;

k.area(r);

break;

case 4:

float w,h;

cout<<"Enter the width and height of cylender";

cin>>w>>h;

k.area(w,h);

break;

default:

cout<<" Enter right choie, Thank You";

}

getch();

}

Output

1.     Square

2.     Rectangle

3.     Circle

4.     Cylinder

Enter your choice

2

Enter the length and breadth of rectangle

10

5

Area of rectangle  :         50

Operator Overloading

         

          #include

          #include

          class s

          int a,b;

          public:

          s()

          {

          a=10;

          b=30;

          }

          void operator-()

          {

          a=-a;

          b=-a;

          }

          void out()

{

cout<

}

};

void main()

{

clrscr();

s s1;

s1;

s1.out();

-s1;

s1.out();

getch();

}

Output

          

            10               30

          -10              -30