slip 24

/* Slip no : 24_1 Create a C++ class Sumdata to perform following functions:

   int sum( int, int)  returns the addition of two integer arguments.

   float sum(flaot, float, float)  returns the addition of three float arguments.

   int sum( int [ ] ,int)  returns the sum of all elements in an array of size ‘n’.*/

#include<stdio.h>

#include<conio.h>

#include<iostream.h>

class sumdata

{

                public:

                                void sum(int a,int b)

                                {

                                                int c;

                                                c=a+b;

                                                cout<<"\n Addition = "<<c;

                                }

                                void sum(float a,float b,float c)

                                {

                                                float d;

                                                d=a+b+c;

                                                cout<<"\n Addition = "<<d;

                                }

                                void sum(int a[],int n)

                                {

                                                int sum=0;

                                                for(int i=0;i<n;i++)

                                                {

                                                                sum=sum+a[i];

                                                }

                                                cout<<"sum="<<sum;

                                }

                                void accept(int a[],int n)

                                {

                                                int sum=0;

                                                cout<<"enter elements";

                                                for(int i=0;i<n;i++)

                                                {

                                                                cin>>a[i];

                                                }

                                }

};

void main()

{

                int a,b,j,k[19];

                sumdata ob;

                float x,y,z;

                clrscr();

                cout<<"\n Enter 2 numbers";

                cin>>a;

                cin>>b;

                ob.sum(a,b);

                cout<<"\n How many numbers you want to enter";

                cin>>j;

                ob.accept(k,j);

                ob.sum(k,j);

                cout<<"\n Enter 3 float values";

                cin>>x;

                cin>>y;

                cin>>z;

                ob.sum(x,y,z);

                getch();

}

/* Slip no : 24_2 Write a C++ program to create two classes Class1 and Class2. Each class contains one float data member.  Write following functions:

To accept float numbers

To display float numbers in right justified format with precision of two digits

To Exchange the private values of both these classes by using Friend function. */

#include<iostream.h>

#include<conio.h>

class class2;

class class1

{

float a;

public:

void accept()

{

  cout<<"\n Enter number : ";

  cin>>a;

}

void display()

{

  cout.setf(ios::left,ios::adjustfield);

  cout.width(20);

  cout<<"\n a="<<a;

}

friend void swap(class1 &,class2 &);

};

class class2

{

float b;

public:

void accept()

{

   cout<<"\n Enter number : ";

   cin>>b;

}

void display()

{

  cout.setf(ios::left,ios::adjustfield);

  cout.width(20);

  cout<<"\n b="<<b;

}

friend void swap(class1 &,class2 &);

};

void swap(class1 &ob1,class2 &ob2)

{

  float temp;

  temp=ob1.a;

  ob1.a=ob2.b;

  ob2.b=temp;

}

void main()

{

  class1 ob1;

  class2 ob2;

  clrscr();

  ob1.accept();

  ob2.accept();

  ob1.display();

  ob2.display();

  swap(ob1,ob2);

  cout<<"\n Ater swapping :\n";

  ob1.display();

  ob2.display();

  getch();

}