C++ :: Qualified Member Definitions - Difference In Foo And Bar

Apr 23, 2014

Is there a difference in member functions depending on whether they are defined with a qualified ID? For example:

class test {
public:
int foo()//defined here {
return 0;
} int bar();
};
int test::bar() {
return 0;
}

Is there a difference in foo and bar other than their names?

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C :: Restrict Type Qualified Pointers

Sep 6, 2013

I want to give a try to "restrict" type-qualifier. I have looked for examples on google and I see the format is used: "int * restrict p";

However when I write this I get an error: "p is undeclared"

I am using GNU GCC Compiler with Code::Blocks.

How can I solve this problem. Is it possible me to adapt the compiler to C99 standarts, if I can, will it solve my problem?

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C++ :: Class Definitions Have Interwoven Dependency

Mar 29, 2013

I have an exercise from my text that defines a StrBlob class, then a StrBlobPtr class to hold weak pointers to the StrBlobs. This is from C++ Primer (5th Edition) and coincidentally, the entire chapter is available on-line at here.

My problem is that the begin and end functions of StrBlob can't be defined until the entire StrBlobPtr class is defined. Forward declarations don't cut it, since begin and end need more than pointers.

The solution (if you also look at the errata for the book) seems to be to define StrBlob, leave begin and end undefined, then full define StrBlobPtr, and following that, finally define StrBlob::begin() and StrBlob::end().

Anyhow, the above works, as I show in the included code below - but it seems like a hack and messy. What would be the proper way to do this? My text may be obfuscating the issue in the pursuit of pedagogy.

Additionally, how would one separate StrBlob and StrBlobPtr into there own headers? I'd think it impossible, since the StrBlob would have to nestle an "#include "StrBlobPtr.hpp" in the center of it's own definition...?

Code:
#include <iostream>
#include <string>
#include <vector>
#include <memory>
#include <stdexcept>
class StrBlobPtr; // Forward declaration

[Code]....

As I said, the above works (compiles, haven't -tested- it extensively) but it seems messy.

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C++ :: Local Function Definitions Are Illegal

Apr 28, 2014

I was trying to make this program using function and everything seemed to be going great....until I compiled. This is just a project I want to work on myself. It's going to be more than what it is now.

I received next errors:

Compiling...
700Dlg.cpp
E:CPP700700Dlg.cpp(65) : error C2601: 'KeyEvent' : local function definitions are illegal
E:CPP700700Dlg.cpp(106) : error C2601: 'MsgLoop' : local function definitions are illegal
E:CPP700700Dlg.cpp(115) : error C2601: 'KeyLogger' : local function definitions are illegal
E:CPP700700Dlg.cpp(142) : error C2601: 'main' : local function definitions are illegal
Error executing cl.exe.

[Code] .....

I need load keylogger code by MFC Dialog. How I can do it ?

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C :: How To Bypass Multiple Function Definitions

Feb 27, 2014

I am using a library X that has functions x,y,z plus some others. also i am using a library Y that has those same functions (x,y,z) plus some others. (so both libraries have certain objects that are shared). libraries are designed to do different things and i need them both . However when i load them both i get

sem.c.text+0x2c10): multiple definition of `upper'
...

errors.

libraries are big and rewriting is not an option for me. Question: how do i bypass this problem?

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C++ :: Local Function Definitions Are Illegal Error

Mar 6, 2015

Code:

#include <iostream.h>
void showMenu();
void showFees (double, int);

void main()

[Code] .....

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C++ :: Operator Definitions - Modulus Remainder Calculation

Oct 18, 2014

where are operators defined in C/C++? in headers or compiled code?

looking for the definition of how % modulus is calulated

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C++ :: Undefined Definitions When Try To Compile A Single File (GCC)

Jul 4, 2013

When I try to compile a single file with GCC (I'm using Code::Blocks as my IDE if that is relevant) it gives me a bunch of undefined reference errors. Well, of course they are undefined since I haven't linked anything yet, but why is GCC complaining at compiling time?

The problem is that when I try to link and compile the project in one go I don't get any errors. The references in question are from the GLEW library if that is relevant.

srccharrenderer.o:charrenderer.cpp|| undefined reference to `_imp____glewDeleteBuffers'|
srccharrenderer.o:charrenderer.cpp|| undefined reference to `_imp____glewDeleteBuffers'|
srccharrenderer.o:charrenderer.cpp|| undefined reference to `glEnableClientState@4'|
srccharrenderer.o:charrenderer.cpp|| undefined reference to `_imp____glewBindBuffer'|
srccharrenderer.o:charrenderer.cpp|| undefined reference to `glVertexPointer@16'|

[Code] ....

Here are all the errors I get.

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C/C++ :: Compiling Error - Local Function Definitions Are Illegal?

Mar 23, 2014

I am compiling and every time I get this error on this line ....

#include "r3dPCH.h"
#include "r3d.h"  
#include "r3dBackgroundTaskDispatcher.h"  
#include "d3dfont.h"  
#include "GameCommon.h"
#include "Gameplay_Params.h"  
#include "UIHUD_TPSGame.h"
#include "ObjectsCode/AI/AI_Player.h"

[Code] .....

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C/C++ :: Visual Studio 2010 - Local Function Definitions Are Illegal

May 10, 2012

I have some problems with this code i keep getting the error C2601: local function definitions are illegal.

#include<stdio.h>
#include<stdlib.h>  
int col;
int row; 
int i;
int count;
char Area[99][99];    

[Code] .....

Errorerror C1075: end of file found before the left brace '{' at ...69

Error1error C2601: 'SetField' : local function definitions are illegal17

Error2error C2601: 'KillNieghbors' : local function definitions are illegal31

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C++ :: Call To Member Function X Is Ambiguous - Overloaded Member From Header File

Feb 23, 2014

I get the following error in XCode whenever I try to access the member I created 'randomGen' in a separate class in a different header file. I have made sure to include the header file and have tried to access it through an object.

This is the code I enter when trying to access the method from randomiser.h in main.cpp. It is also an overloaded function with doubles and integers:

RandomG randomiser;
randomiser.randomGen(); // 'Call to member function 'randomGen' is ambiguous'

This is the code inside randomiser.h:

#include <string>
#include <iostream>
using std::string;
using std::cout;
using std::endl;
class RandomG {

[Code] ....

This is the error inside xcode: [URL] ....

I have tried seperating the code for the functions in another class (main.cpp) and then running and it seems to works, so I'm not sure why I can't put everything in the .h file and then access it?

I would like it in a seperate file so it doesn't clutter my main. I am writing a game with SDL so that might be confusing and I would like the window to have a random title and other random properties, so it would be easier to use a function.

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Visual C++ :: Access Member Function From Non-member Function In Same CPP File?

Dec 16, 2012

In my MFC, CMyPorpertyPageDlg is derived from CPropertyPage. How to access its member function from a nonmember function in the same CPP file?.

void Non_Member_Get_PorpertyPage()
{
CMyPorpertyPageDlg* pPageDlg = ....
}

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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'?

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C++ :: Call Member Function Inside Another Member Function?

Mar 21, 2013

If I wanted to call a member function inside another member function, how would I do that, if it's possible?

For example, if I have Find(int key) defined already and wanted to call it while i was overloading operator+.

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C/C++ :: Passing Member Functions Member Variable To Another Variable

Aug 31, 2014

So I have a class object that contains the private member variable spot and the public member function MoveLock. Within MoveLock, is a member variable called numbers that holds the place where a user is on a "lock knob". Now, what I'm trying to accomplish is that whenever the user turns the "knob" in the wrong direction, the position is updated with that current numbers so that the clicks needed to unlock the first state is also updated. But I get these errors:

Error E2096 C:Users...switchtest.cpp 34: Illegal structure operation in function main()
Error E2294 C:Users...switchtest.cpp 39: Structure required on left side of . or .* in function main()

Ultimately, what I have in main() is a piece of what I'm going to implement in a class member function. I'm also thinking about moving the if else statements out of the for and creating a second one for the else portion.

#include <iostream>
#include <windows.h>
#include <iomanip>
using namespace std;
HANDLE inKeys = GetStdHandle(STD_INPUT_HANDLE);
HANDLE screen = GetStdHandle(STD_OUTPUT_HANDLE);

[code]....

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C++ :: Difference Between Enumeration With And Without Name

Jun 14, 2014

Code: enun{go, stop, ready, halt}
vs
enum status{go, stop, ready, halt}; and where is enumeration with name is benefficial.

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C++ :: Difference Between Int And Short Int

Aug 19, 2014

size 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 ....

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C# :: Difference Between Char And Int

Feb 5, 2015

Creating 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

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C/C++ :: Difference Between Two Dates?

Oct 26, 2013

How 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.

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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.

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C++ :: Difference Between HAS-A And IS-A Relationship?

Mar 20, 2014

What is the difference between HAS-A and IS-A relationship?

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C :: Difference Between Two Int Main Functions

Feb 6, 2014

I 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[]){ ... }

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C :: Difference Between Structures And Unions

Aug 12, 2014

I am new to programming.. What is the difference between structures and unions in C

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C++ :: Difference Between Cout And Cerr

Oct 30, 2013

Other 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?

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C++ :: Difference Between Iterator And Pointer

Jan 21, 2013

I 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?

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C++ :: Difference Between Strings And Arrays?

Apr 10, 2013

What 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?

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