Write a program to demonstrate the use of 'Composition' in C++
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Answer / mahendra
Find the program below to demonstrate the composition.
first define the class called the DataBirth.
class DateOfBirth
{
public:
void UpdateDMY();
void GetDMY();
private:
int date,month,year;
};
define the Employee class.
class Employee
{
public:
void GetDetails();
void UpdateDetails();
private:
DateOfBirth BirthDate;
}
Here the EMployee class is having the object of the
DateOfBirth class as data member. With this the Employee
class is achieving the "has-a" relation with the
DateOfBorth class. In this way the Employee class can have
objects of the many calsses as members.
Is This Answer Correct ? | 14 Yes | 8 No |
Answer / jojo
#ifndef POINT2D_H
#define POINT2D_H
#include <iostream>
class Point2D
{
private:
int m_nX;
int m_nY;
public:
// A default constructor
Point2D()
: m_nX(0), m_nY(0)
{
}
// A specific constructor
Point2D(int nX, int nY)
: m_nX(nX), m_nY(nY)
{
}
// An overloaded output operator
friend std::ostream& operator<<(std::ostream& out, const
Point2D &cPoint)
{
out << "(" << cPoint.GetX() << ", " << cPoint.GetY()
<< ")";
return out;
}
// Access functions
void SetPoint(int nX, int nY)
{
m_nX = nX;
m_nY = nY;
}
int GetX() const { return m_nX; }
int GetY() const { return m_nY; }
};
#endif
Is This Answer Correct ? | 1 Yes | 3 No |
IN PROGRAMING LANGAUGE A C++ IS PURELY OBJECT ORIENTED OR NOT?
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This program numbers the lines found in a text file. Write a program that reads text from a file and outputs each line preceded by a line number. Print the line number right-adjusted in a field of 3 spaces. Follow the line number with a colon, then one space, then the text of the line. You should get a character at a time and write code to ignore leading blanks on each line. You may assume that the lines are short enough to fit within a line on the screen. Otherwise, allow default printer or screen output behavior if the line is too long (i.e., wrap or truncate). A somewhat harder version determines the number of spaces needed in the field for the line numbers by counting lines before processing the lines of the file. This version of the program should insert a new line after the last complete word that will fit within a 72-character line.
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