C++ :: Difference Between Encapsulation And Data Abstraction?
Apr 19, 2013what is main Difference between Encapsulation and Data Abstraction?
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C++ :: Difference Between Data Abstraction And Data Hiding?
Mar 20, 2014What is the difference between Data Abstraction and Data Hiding?
View 14 Replies View RelatedC++ :: Separating Abstraction And Implementation
May 13, 2012What is the benefit on separating the abstraction and implementation.
The below code
Code:
class FileProcessor {
public:
virtual void processFile();
};
class DocProcessor : public FileProcessor
[Code] ....
Till now it is fine. suppose DocProcessor and ExcelProcessor uses two big algorithm to process these file types then I still can have subclasses like :
class Algorithm1 : public DocProcessor
{
public:
void algorithm(); //which will be called as per the algorithm class instantiated for to process
};
[Code] ....
same for ExcelProcessor class
Here everything looks fine to me. [ I have not used the bridge pattern to separate the abstraction and implementation]. The only thing i can achieve using bridge is that the number of classes will be reduced if new class like jpgProcessor is introduced or new algorithim is introduced.
Then why it is recommended that always separate the abstraction and implementation...
C++ :: Object Inheritance And Encapsulation
Jan 17, 2014I want to define a base class A which allows different type of logging (file stream, console, etc). In the meantime, I want a class B to to be able to call A's print function (i.e. derived class C's print function which defines the logging method). However, I don't want to make A's print function to be public because it will only be called by B.
class A {
protected:
virtual void print(void);
};
[Code] .....
C# :: How To Use Encapsulation / Polymorphism And Inheritance In WPF
Oct 20, 2014I have been reading up about object oriented programming recently and have come across 'Encapsulation, Polymorphism and Inheritance' as i understand it so far all OOP programs should use these three concepts. So i started thinking how do i get these concepts into my program as i am using WPF C# and i could not really find much good info about how these concepts apply to WPF programs.
Or do these concepts just not work with WPF programs?
C++ :: Virtual Breaks Encapsulation?
Jul 17, 2013Here is the code,
Code:
class A {
public:
virtual void foo(){}
};
class B : public A {
[Code] ....
Obviously when you call pA->foo, it will call foo defined in B. But foo defined in B is private. It is not supposed to be called outside the class B. So it looks like virtual breaks encapsulation.
C++ :: Difference Between F And Fn
Jan 26, 2013#include <functional>
using namespace std;
template<typename...Args>
void on(function<void(Args...)> f) {
function<void(Args...)> fn; // this line causes error C2059: syntax error : '<fake-expression>'
}
int main() {
function<void()> f;
on(f);
}
What's the difference between 'f' and 'fn'?
C++ :: Difference Between Enumeration With And Without Name
Jun 14, 2014Code: enun{go, stop, ready, halt}
vs
enum status{go, stop, ready, halt}; and where is enumeration with name is benefficial.
C++ :: Difference Between Int And Short Int
Aug 19, 2014size of int is 2 bytes and of short int is also 2 bytes.The range of values for int and short int are the same.
Then why int and short int are used? only int or short int is enough ....
C# :: Difference Between Char And Int
Feb 5, 2015Creating a C# program to prompt the user to choose the correct answer from a list of answer choices of a question and if the answer is wrong then try to prompt the same question again with do while loop but it is not working as it suppose to be.
class Program
{
static void Main(string[] args {
char UserChoice = ' ';
do {
Console.WriteLine("What is the command keyword to exit a loop in C#?");
Console.WriteLine("a.quit");
Console.WriteLine("b.continue");
[Code] ....
But if i use int instead of char in this program and replace a, b, c and d with 1, 2, 3 and 4 then this program work fine. What is wrong in this code when using char
C/C++ :: Difference Between Two Dates?
Oct 26, 2013How i can easly calculate the difference between two dates ?
Example :
Date 1 = 12 March(3)
Date 2 = 24 November(11)
Result = 258 days
how to do this in C++ ?Btw i don't want to use date functions or something like that.I want to do it with simple math formula.
C/C++ :: Difference Between Int And Double?
Jul 31, 2013#include<iostream>
using namespace std;
int main() {
double x,i;
cout<<"Enter the value of the number
[Code] ....
why I am not getting exact square root if I take x as double,but if I am taking it as int I got the correct result.
C++ :: Difference Between HAS-A And IS-A Relationship?
Mar 20, 2014What is the difference between HAS-A and IS-A relationship?
View 7 Replies View RelatedC :: Difference Between Two Int Main Functions
Feb 6, 2014I just wanted to know what's the difference between these two types of main functions:
Code: int main (int argc, char** argv){ ... }
Code: int main (int argc, char* argv[]){ ... }
C :: Difference Between Structures And Unions
Aug 12, 2014I am new to programming.. What is the difference between structures and unions in C
View 2 Replies View RelatedC++ :: Difference Between Cout And Cerr
Oct 30, 2013Other than the theoretical difference between cout and cerr where the former puts values to the monitor and the latter puts values related to errors to the monitor, is there any real difference here? Why not use cout when you want to send anything to monitor? Why use cerr at all?
View 7 Replies View RelatedC++ :: Difference Between Iterator And Pointer
Jan 21, 2013I just figured out that some std functions (for example: copy) need the resource and target objects have iterators to work. Otherwise, the compiler rejects. In case of two arrays, declared as:
double myA[100] = {};
array<double, 100> myB = {};
myA[0] is like a pointer, myB.begin() an iterator, if I do not make any mistake. So, what is exactly the difference between the pointer and the iterator here? They all give the access to elements.
If I need the target of copy to be an array like myA which cannot give an iterator, is there a way to make the command "copy" work for it?
C++ :: Difference Between Strings And Arrays?
Apr 10, 2013What is the diff between strings and arrays? Here is sample:
By String:
#include <iostream>
#include <string>
using namespace std;
int main () {
string mystr;
[Code] .....
By arrays:
#include <iostream>
using namespace std;
int main () {
char name[256], title[256];
[Code] ....
which is preferable and can i pick characters one by one in string?
C++ :: Inverted Difference Triangle
Jun 21, 2013Similar to Pascal’s triangle, the difference triangle has some interesting properties that find applications in various fields of the natural and applied sciences. In simple terms, a difference triangle is a set of integers arranged in an inverted triangle where each inverted triangle triad has its lower element equal to the difference (absolute value) of the two elements in the upper row. A difference triangle can be created from a sequence of integers forming the uppermost row by iteratively taking differences between consecutive terms to form the next row until a single-element row is created.
Example Consider the sequence 5, 8, 13, 21, 34, 55 from the Fibonacci series as the uppermost row of the difference triangle. The difference between successive elements form a new set: 3 (= 8 – 5), 5 (= 13 – 8), 8 (= 21 – 13), 13 (= 34 – 21), and 21 (= 55 – 34). The process can then be repeated until there is only one element left giving the following difference triangle:
5 8 13 21 34 55
3 5 8 13 21
2 3 5 8
1 2 3
1 1
0
Problem Write a program that forms a difference triangle using a given series of numbers as topmost row.
C++ :: Difference Between Erase And Clear
Apr 4, 2014vector<int> *vec; allocate memory and
suppose vec conatins 10 values then
erase(vec->begin(),vec->end());
vec.clear();
both should be used or any one one is fine to erase all ??
C++ :: Difference Between CMOS And Bipolar?
Jan 11, 2013I know this isnt the correct forum to put this in but i dont know where else to post this and get a quick answer...
Im looking up logic gates and theres a option between bipolar and CMOS and i was wondering whats the differnce
For example
NAND Gate 4 Element 2 Input CMOS 14-Pin Plastic Dip Tube
NAND Gate 4 Element 2 Input Bipolar 14-Pin Plastic Dip Tube
C/C++ :: Computing Bit Difference Between Two Arrays?
Jul 23, 2014#include <stdio.h>
#include <stdlib.h>
int b_diff (int, int);
[Code].....
I am trying to take two arrays H[], and V[] and call each element to compute the bit difference(Hamming distance) and return that back to the main function to be used in calculating pixel_phase and pixel_smoothing. I'm getting an error that bit_diff cannot be used as a function and I've tried renaming it but nothing seems to work.
[ int b_diff (int a, int ] is how it should actually look.int b_diff (int a, int is how it should actually look).
C++ :: Calculating The Time Difference?
Mar 5, 2014I want to find out the time difference,say i start walking from my home at 23 hr 10 min 25 seconds and I reach destination at 1 hr 10 min 25 seconds.. I know here the time difference is 1 hr 55 min 55 seconds. But how am I gonna calculate this?
View 3 Replies View RelatedC++ :: Difference Between Methods And Objects?
Feb 2, 2014What is a method and what is an object?
View 8 Replies View RelatedC/C++ :: Difference Between Class And Structure
Mar 16, 2014what is the difference between a class and a structure(struct)...when to use class and when to use struct???
View 1 Replies View RelatedC/C++ :: Difference Between Auto And Decltype In 0x
Jun 7, 2012I'm having trouble with auto and decltype.
void f(const vector<int>& a, vector<float>& b) {
typedef decltype(a[0]*b[0]) Tmp;
for (int i=0; i < b.size(); ++i) {
auto p0 = new auto(a[i]*b[i]);
auto p1 = new decltype(a[i]*b[i]);
[Code] ....
The above code runs well in GCC4.7.
Could I use 'new auto(a[0]*b[0])' to allocate memory for the type of a[0]*b[0]？
And I can not distinguish the difference between decltype and auto in this case.