• Save
oop Lecture 4
Upcoming SlideShare
Loading in...5
×

Like this? Share it with your network

Share
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
259
On Slideshare
259
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
0
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. OOP Lecture 4 – 23rd Feb, 2011Solution 1:#include <iostream>using namespace std;struct phone{ int area; //area code (3 digits) int exchange; //exchange (3 digits) int number; //number (4 digits)};int main(){ phone ph1 = { 212, 767, 8900 }; //initialize phone number phone ph2; //define phone number // get phone no from user cout << "nEnter your area code, exchange, and number"; cout << "n(Don’t use leading zeros): "; cin >> ph2.area >> ph2.exchange >> ph2.number; cout << "nMy number is " << ( << ph1.area << ") " << ph1.exchange << - << ph1.number; cout << "nYour number is " << ( << ph2.area << ") "<< ph2.exchange << - << ph2.number << endl; return 0;}Solution 2:#include <iostream>using namespace std;struct point{int xCo; //X coordinateint yCo; //Y coordinate};int main(){ point p1, p2, p3; //define 3 points cout << “nEnter coordinates for p1: “; //get 2 points cin >> p1.xCo >> p1.yCo; //from user cout << “Enter coordinates for p2: “; cin >> p2.xCo >> p2.yCo; p3.xCo = p1.xCo + p2.xCo; //find sum of p3.yCo = p1.yCo + p2.yCo; //p1 and p2 cout << “Coordinates of p1+p2 are: “ //display the sum << p3.xCo << “, “ << p3.yCo << endl; return 0;}
  • 2. Solution 3:#include <iostream>using namespace std;class Rectangle {public:Rectangle( double = 1.0, double = 1.0 );double perimeter( void );double area( void );void setWidth( double w );void setLength( double l );double getWidth( void );double getLength( void );private: double length; double width; };Rectangle::Rectangle( double w, double l ) { setWidth(w); setLength(l);} double Rectangle::perimeter( void ) { return 2 * ( width + length ); }double Rectangle::area( void ) { return width * length; } void Rectangle::setWidth( double w ) { width = w > 0 && w < 20.0 ? w : 1.0; }void Rectangle::setLength( double l ){ length = l > 0 && l < 20.0 ? l : 1.0;}double Rectangle::getWidth( void ) { return width; }double Rectangle::getLength( void ) { return length;}int main() { Rectangle a, b( 4.0, 5.0 ), c( 67.0, 888.0 ); // output Rectangle a cout << "a: length = " << a.getLength()<< "; width = " <<a.getWidth()<< "; perimeter = " << a.perimeter() << "; area = " <<a.area() << n; // output Rectangle b cout << "b: length = " << b.getLength() << "; width = " <<b.getWidth() << "; perimeter = " << b.perimeter() << "; area = " <<b.area() << n; // output Rectangle c; bad values attempted cout << "c: length = " << c.getLength() << "; width = " <<c.getWidth() << "; perimeter = " << c.perimeter() << "; area = " <<c.area() << n; return 0;}