 |
 |
|
|
| |
| |
| |
|
|
| Articles about Derived |
| Seeking Alternatives to Animal-Derived Drugs | | 2008-04-01 07:26:30 | | By STEPHANIE SAUL
Chopped pig pancreas may not sound appetizing. But most cystic fibrosis patients eat a refined version of it each breakfast, lunch and dinner — five large capsules a meal — to supply enzymes their bodies do not produce.
The pills are life-sustaining for most of the nearly 30,000 people in the United States with [...]... | | By: ArticlesModern | | |
| | Parameterized Constructors of Derived Classes | | 2007-08-03 08:56:17 | | In the previous article Constructors
and Destructors of Derived Classes, we’re discussing about the
calling conventions of Constructors and Destructor functions of derived classes
whose base class also had them. There was one thing special about those constructors;
none of them were taking arguments.
If only the derived’s constructor takes parameters then also its O. K.
but what if both the base and derived class contains parameterized constructors
(as is obvious from the code below).
// this code contains ERRORS
// base class
class base
{
int a;
public:
base(int n)
{
//...
}
};
// derived class
class derived:public base
{
int b;
public:
derived(int m)
{
//...
}
};
//main
void main()
{
base b(10); //ok
derived d(10); // ERROR!!
// base's constructor
// will also be called and
// it needs parameters too !!
}
How’d you pass arguments to the bas... | | By: Learning Computer Programming | | |
| | Constructors and Destructors of Derived Classes | | 2007-08-02 08:51:11 | | Classes can have Constructors and/or Destructors and Derived Classes are no
different.
Situation remains understandable until both the base and its derived class
have Constructors and/or Destructors. Since the derived class contains more
than one Constructors and/or Destructors, it becomes confusing which one will
be called when.
This is because when an object the inherited class is constructed both the
constructors (base’s and its own) should be invoked and same applies when
it gets destructed.
This article will clear all this!
Consider the following example program:
// -- INHERITANCE --
// Constructors, Destructors
// and Inheritance
#include<iostream.h>
// base class
class base
{
public:
base(){cout<<"Constructing Base
";}
~base(){cout<<"Destructing Base
";}
};
// derived class
class derived:public base
{
public:
derived(){cout<<"Constructing Derived
";}
~derived(){cout<<"Destructing Derived
";}
};
... | | By: Learning Computer Programming | | |
|
|
|
| Deriving a Class from another Derived Class | | 2007-08-02 08:19:09 | | Many of the peoples think that deriving a class from other derived classes
is a confusing thing, that’s why I have written this article to let them
know that deriving such classes is no different. To the compiler it doesn’t
matter whether the class from which a new class is derived is itself derived
or not.
The example program below illustrates this:
// -- INHERITANCE --
// Example program to illustrate
// the derivation of a class
// from another derived class
#include<iostream.h>
// base class
class one
{
int a;
public:
void setone(int num){a=num;}
int getone(){return a;}
};
// derived from base class 'one'
class two:public one
{
int b;
public:
void settwo(int num){b=num;}
int gettwo(){return b;}
};
// derived from derived class
// 'two'
class three:public two
{
int c;
public:
void setthree(int num){c=num;}
int getthree(){return c;}
};
void main(void)
{
//... | | By: Learning Computer Programming | | |
| | Hartley Enterprises’ Haybusa-derived 2.8L V8 | | 2007-05-19 22:05:19 | | Filed under: Gadgets, Tech
If four’s good, then eight must be better - that’s the idea behind this jewel-like V8 engine built by Hartley Enterprises from two Suzuki Hayabusa four-cylinder powerplants.
The 75-degree V8 displaces 2.8 liters, weighs only 200 lb and puts out 400 hp at a window-rattling 10,000 rpm. Torque peaks at respectable 245 ft-lbs (at 7500 rpm!), although dyno runs for a 2.6 liter version show a fairly flat curve. Aside from boring out the ‘busa block from 81mm to 83mm, none of the wide variety of performance enhancements available for the bike version have been applied to the HE V8, so it’s safe to say we’re nowhere near the performance limits of the design.
Hartley’s diminutive V8 is produced to order, with the 2.8 liter version priced under $30,000, depending on options. Check out the Hartley Enterprises website for more details, including video of a dyno run with the engine installed in a Caterham 7.
Thanks for the tip, Matt!
[... | | By: Car O Focus | | |
|
|
| |
 |
|
| |
| |
|
 |
