C++ :: Finding Function Documentation For Header File

Nov 23, 2013

I would like to see what functions the following header file has:

#include <tf/LinearMath/Transform.h>

Any website that has all the c++ libraries and where to find the functions that come with this?

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C++ :: Getpixel Function (SDL Documentation) Color Comparison

Nov 6, 2013

I think that the getpixel function (existed in sdl documentation) gets the color of the coordinate indicated by x and y

Uint32 getpixel(SDL_Surface *surface, int x, int y) {
int bpp = surface->format->BytesPerPixel;
/* Here p is the address to the pixel we want to retrieve */
Uint8 *p = (Uint8 *)surface->pixels + y * surface->pitch + x * bpp;
switch(bpp) {

[Code]...

my problem is that, I want to compare it with the white/black color ,so how can I do that?

I tried this way but it does not work

int main(int argc,char *argv[]) {
SDL_Init(SDL_INIT_VIDEO);
SDL_Surface *screen = SDL_SetVideoMode(600,400,32,SDL_HWSURFACE|SDL_DOUBLEBUF);
SDL_Event event;
bool pass = true;
SDL_Color color = {0,0,0};/// Black color
if(color==getpixel(screen,0,0)

[Code]...

the error C:Documents and SettingsTechno01Bureausdlmain.cpp|83|error: no match for 'operator==' in 'color == getpixel(screen, 0, 0)'|

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C++ :: Finding Nested Header Files?

Aug 27, 2013

I'm working with CGAL - Computational Geometry Algorithms Library, which is a library of geometry functions declared as several thousand header-only files. When I run a basic program (source code [URL] ) I get this output: [URL]

I have tried switching angle brackets to quotes. I have also started reading up on CMake.

Do I need to walk the dependency tree and add all of those files to my CMakeLists.txt? Or is there a way to tell the compiler to look in subdirectories?

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C++ :: Include Function From Header File?

Feb 21, 2013

I am trying to include a function from a header file named headerfunt.h . The code of my header file is

Code:
#ifndef HEADERFUNCT_H_INCLUDED
#define HEADERFUNCT_H_INCLUDED
#include <iostream>

[Code]....

But, while compiling it says abs was not declared... I have included the file.

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C :: Struct Array To Function On Header File?

Mar 13, 2014

I just can't make my code work. I need to pass a struct to a .h file. Here is my main:

Code:
#include "calculos.h"
#include "auxiliar.h"
struct dados{
int idade;

[Code].....

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C++ :: Complete List Of Useful Function In Header File

Dec 31, 2014

i want to know about dunctions in windows.h header file.i know some of it...like

sleep()
beep()

complete list of usefull functions in said header file.

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C++ :: Header File - Running Class Function As A Thread

Apr 20, 2014

I have a header file with a bunch of functions. I want to create a thread using the <threads> package and am using

void myclass::functionX() {
}
void myclass::function() {
std::thread tr(myclass::functionX);
}

I am getting the error "no instance of std::thread::thread matches the argument list argument types are (void());

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C++ :: Defining Function Prototypes In Header File Without Implemented Body

Oct 6, 2014

Basically, I have made a program which implements the platform specific layers (such as entry function, file loading, timing functions etc.) that gets compiled into a .exe (or platform equivalent).

But I want to make this portable and reusable across other projects, so the entry function for the platform will call the function "AppMain" which is the generic main function that is not reliant on the underlying platform etc. (i.e defined in a .h file that the project module will implement).

Ideally I would want to build the AppMain code into its own library. However, This AppMain code would want access to the Platform functions such as the functions compiled into the .exe.

This has confused me somewhat and has forced me to build both the AppMain module and the Platform Code into the same exe file so they can use each others functions.

Is there any way I can create a header file (with all the function prototypes in) but they do not get implemented in the Platform code but rather they can be 'guaranteed' to be available at runtime?

Here is what I am trying to achieve in a high level view:

win32layer.cpp: (implements all the functions defined in Platform.h)

#include <AppMain.h>
int main(int argc, char** argv) {
//call AppMain
return AppMain(argc, argv);

[Code] ....

in this scenario of course I could not compile the platform functions as the application has not been created and thus appmain cannot call the platform functions because that has not been created etc....

Any way to overcome this?

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C++ :: Calling A Function From A Header To Another Header?

May 16, 2014

I'm doing a compiler, and I'm using writing everything in headerfiles.

at the moment I have lexer.h, token.h and for this case I need reservedWords.h

reservedWords.h is made up of enums showing the needed words

in token.h I have a function called reservedWords reservedLookup(string str) which returns a reservedWord (enum)

now in lexer.h I have a function called Token* getNextToken() in which I need to make use of the function reservedLookup found in token.h

note that all of them are classes apart from reservedwords as in

class Lexer
{
public: .....
}
class token
{
public .....
}

how I can call that function?

I tried declaring reservedWords reservedLookup (string str) BUT obviously it's directing me as Lexer::reservedLookup and not as Token::reservedLookup

When I tried using Token::reservedLookup it gave me

E:Universitycompilerslexer.h|65|error: cannot declare member function 'Token::reservedLookup' within 'Lexer'|

N.B I use namespace std, that's why I didnot write std::string str

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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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C++ :: Implementation File Versus Header File - Eclipse Giving Errors

Feb 10, 2013

I have written my program and it works when I keep everything in the header files, and then have my main. I am now splitting them up into implementation files, but Eclipse keeps giving me errors. It gives me error at every opening brace of the constructor and functions. It says on all of them "Redefinition of (name of constructor or method), Previously declared here." What am I doing wrong, because it works in the header file?

#include "KeyValuePair.h"
template<typename Key,typename Value>
KeyValuePair<Key,Value>::KeyValuePair()

[Code] .....

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C++ :: Overloaded Operator Defined In Header File - Gives Error In CPP File Of Class

Apr 12, 2014

I am working on an assignment in which i have to perform th following task

myClass itsObject1,itsObject2;
itsObject2=5000+itsObject1;

I have defined overloaded operator as follows in the header file but in the cpp file of the class it gives error.

friend vli &vli::operator + (int &a,vli &obj);

How to define it in cpp file of my class?

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C++ :: Splitting Template Class To Header H File And Implementation CPP File

Sep 12, 2014

What is the right syntax for implementing the .cpp of a template class?

Consider this LinkedList.h file:
Code: #include<iostream>
#include"Iterator.h"

template <class T>
class LinkedList {

[Code] ....

How should the implementation for the LinkedList constructor, for example, should look like in the LinkedList.cpp file?

I tried this:

Code: #include "LinkedList.h"
template <class T>
LinkedList<T>::LinkedList<T>() {
// constructor
}
LinkedList<T>::~LinkedList<T>() {
// destructor
}

But the compiler wouldn't accept it.

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C++ :: How To Declare Class As Forward In Header File - Regular Use In CPP File

Jan 17, 2015

lets say we have a valid class with full implementation, X. can this class be declared as forward in Y header file:

Code: class X;

class Y{
X* m_X;
}

but still be used as regular in the cpp file?

Code:

#include "Y.h"
#incldue "X.h"
T Y::function(){
m_X->doSomething();
}

visual studio prevents me from doing it , I wonder if the standard also says so.

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C++ :: Function Call From Header

Nov 27, 2014

I've got These 3 files:

// OTI.h
extern void Unpack(void* Packet);

// PackUnpack.cpp
#include "OptiTrackInterface.h"
void Unpack(void* Packet) {
...
}

// OTI.cpp
#include "OptiTrackInterface.h"
Unpack((char*) &indata);

When i try to compile OTI.cpp, I got the error that Unpack is undeclared.

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C Sharp :: Finding String From Physical Memory Dump File (RAW File)?

Feb 5, 2014

I need to find a string(&login=) from physical memory dump file.And i have to print the word or string following it.Is there any C# code for this problem?

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C :: How To Share Variable Value From One Source File To Other Header File

Dec 11, 2014

I wanted to share the value of a variable from Sender Program to Receive after program and want to calculate difference between send and receive. After studying Header file concept I program following three.

Now I am struck. How to to compile? I link all these file. I used following method:

Code:
gcc Sender.c -o Sender Sender.h
gcc Receiver.c -o Receiver Student.h

Then I run Sender and after that Receiver.I per my knowledge, Receiver should give difference but it gives error :

Code:
Receiver.c: In function "main":
Receiver.c:10:42: error: "Send" undeclared (first use in this function)
printf(" Total Receive is %d
",Receive-Send);

Code:
Sender.c
#include <stdio.h>
int Send ;
void main(){

[Code] ....

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C++ :: Invoke Enum Class From Header File To Cpp File

May 21, 2014

I have been working a project in C++. I have TTTMain.cpp file that has all the function calls, TTTFuntions.cpp that has all the functions, I have TTT.h file that has all the prototypes and variables and additionally I have Winner.h that has enum class Winner declaration in it. Here is my block of codes:

Winner.h file:

#ifndef winner
#define winner
enum class Winner {

[Code]....

My question is when I compile this gives me error on

Winner gameSquares[] = { Empty, Empty,Empty, Empty, Empty, Empty, Empty, Empty, Empty };

with saying "invalid use of non-static data data member" and It says "Empty was not declared in this scope."

I know calling enum is very very trick.

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Visual C++ :: What Header For Sleep Function

Jan 26, 2014

I have been googling for a long time to find the header used with sleep().

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C++ :: Finding Maximum Of A Function

May 8, 2014

What is the syntax to find the maximum of a function over the interval a≤x≤b starting at a with a step size of Δx ?

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C/C++ :: Finding The Value Of Sin(x) Without Using Math Function

Apr 14, 2013

How can i solve a problem of sin(x) without using any math.h and only using my own declared function.

#include <stdio.h>
int fact (int a) {
    int i;
    int k = 1;
    for (i=1;i<=a;i++)

[Code] ....

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C++ :: Function Not Finding Largest Integer?

Feb 10, 2013

My code compiles fine but it doesn't seem to want to calculate the max integer. It calculates min and average fine but I'm not seeing what is wrong with my code. The max integer keeps coming out wrong.

#include <iostream>
using std::cin;
using std::cout;
using std::endl;
#include <cstdlib>
#include <algorithm>
using std::swap;

[Code] ....

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C++ :: Missing Templates File CPP And Header File

Jul 29, 2013

I am beginner in c++ language. i'm use visual studio 2010 ultimate. the problem is i can't add c++ file(.cpp) and header file(.h).

Here the screenshot : [URL] ....

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C++ ::  Header File Automatically Linking CPP File?

Dec 27, 2014

I made my header file. If cpp file with definitions is in project compiler knows it has to be linked, but if it's not compiler doesn't know. If I include standard library or boost I don't have to manually link cpps. How to do so including my header automatically links cpp? Maybe problem is with something else?I use VS 2013.

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C++ :: Source File And Header File Are Not Compiled Together

Jan 30, 2013

My socket.cpp program got error. it showed "socket.h: no such file or directory". I had put my header file (socket.h) in the same place with my source file.

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C++ :: Header And Prototype Correct But No Matching Function For Call To?

Dec 10, 2014

For whatever reason, I get an error meassage about lines 53-57 saying there is no matching function to call to. Yet the header and the prototype are correct (I think anyways).

#include <iostream>
#include <string>
#include <fstream>
#define N 10
using namespace std;
class cust{

[Code] ....

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