10-22-2013
Sorry, I was away last week, but that's exactly it.
Making it 'virtual' means the computer needs to store extra information in the class, since it doesn't know what functions to call it it from the type it's supposed to be alone.
This User Gave Thanks to Corona688 For This Post:
9 More Discussions You Might Find Interesting
1. Programming
Hi,
I have a base class and derived a class from the base class, i want to print & read the data for the object created for the derived class,so i have overloaded both the << and >> operators and also have done the foward declaration.
Below is the code snippet,
#include <iostream>
class... (3 Replies)
Discussion started by: ennstate
3 Replies
2. UNIX for Dummies Questions & Answers
im just trying to have some fun and kill some time writing a c++ program that has a person type in a car make and model then gives them a year and a price. or something like that. i always have problems getting it goin but once the ball is rolling im usually pretty good. anyone wanna help me out? ... (1 Reply)
Discussion started by: rickym2626
1 Replies
3. Programming
Hi, i have a question about C++. Is it possible to declare a class with a member ot the same class? For example, a linked list or i want to convert this C code to C++ class (Elemento)
typedef struct elemento
{
char name;
char value;
List<struct elemento> ltElementos;
... (7 Replies)
Discussion started by: pogdorica
7 Replies
4. Programming
Hi friends,
The derived class cannot access the base class's variables in my program. You can have a look at my code, I am actually using class templates.
#include <iostream>
using namespace std;
template <class T>
class Sum
{
friend void Check(Sum &s, T a, T b)
{
T x,... (2 Replies)
Discussion started by: gabam
2 Replies
5. Programming
Hi,
I believe the next code is wrong:
class Egg {
Egg e;
int i;
Egg(int ii=0) : i(ii) {}
};
because you would end up with an endless definition (memory allocation) of Egg objects, thus int i.
Ok, so God Eckel proposes for a singleton:
class Egg {
static Egg e;
int... (5 Replies)
Discussion started by: xavipoes
5 Replies
6. UNIX for Advanced & Expert Users
Hi all!
I am trying to register a device in an existing device class, but I am
having trouble getting the pointer to an existing class.
I can create a class in a module, get the pointer to it and then use
it to register the device with:
*cl = class_create(THIS_MODULE, className);... (0 Replies)
Discussion started by: hdaniel@ualg.pt
0 Replies
7. Programming
Why, here the size of class 'Derived' is 8 ?
class Base1
{
public:
virtual void f() { }
};
class Base2
{
public:
virtual void f() { }
};
class Derived : public Base1, Base2
{
public:
virtual void f() { }
}; (1 Reply)
Discussion started by: techmonk
1 Replies
8. Programming
Hello All,
I am a learner in C++. I was testing my inheritance knowledge with following piece of code.
#include <iostream>
using namespace std;
class base
{
public :
void display()
{
cout << "In base display()" << endl;
}
void display(int k)
{... (2 Replies)
Discussion started by: anand.shah
2 Replies
9. Shell Programming and Scripting
Dear All,
I have a requests to retrieve all lines if second line last columns meets certain criteria.
Here is the output of the result
Table: DSSBDW.DA_MASK_CLK_AR
120908 0 86 86 - 1934528 0 70 100 -*-
Table: DSSBDW.DA_MASK_CLK_IP
310657 22030 143 185 - 5281169 7 88 77 *-*
Table:... (5 Replies)
Discussion started by: ckwan123
5 Replies
LEARN ABOUT DEBIAN
tau_mapping_object
TAU_MAPPING_OBJECT(3) TAU Mapping API TAU_MAPPING_OBJECT(3)
NAME
TAU_MAPPING_OBJECT - Declares a mapping object
SYNOPSIS
C/C++:
TAU_MAPPING_OBJECT(FunctionInfo FuncIdVar);
DESCRIPTION
To create storage for an identifier associated with a higher level statement that is mapped using TAU_MAPPING, we use the
TAU_MAPPING_OBJECT macro. For example, in the TAU_MAPPING example, the array expressions are created into objects of a class
ExpressionKernel, and each statement is an object that is an instance of this class. To embed the identity of the statement we store the
mapping object in a data field in this class. This is shown below:
EXAMPLE
C/C++ :
template<class LHS,class Op,class RHS,class EvalTag>
class ExpressionKernel : public Pooma::Iterate_t {
public:
typedef ExpressionKernel<LHS,Op,RHS,EvalTag> This_t;
//
// Construct from an Expr.
// Build the kernel that will evaluate the expression on the
// given domain.
// Acquire locks on the data referred to by the expression.
//
ExpressionKernel(const LHS&,const Op&,const RHS&,
Pooma::Scheduler_t&);
virtual ~ExpressionKernel();
// Do the loop.
virtual void run();
private:
// The expression we will evaluate.
LHS lhs_m;
Op op_m;
RHS rhs_m;
TAU_MAPPING_OBJECT(TauMapFI)
};
SEE ALSO
TAU_MAPPING_CREATE(3), TAU_MAPPING_LINK(3), TAU_MAPPING_PROFILE(3)
08/31/2005 TAU_MAPPING_OBJECT(3)