C :: How To Include Single Header Files Into Project

Oct 2, 2014

I'm a beginner with C and wonder how to include single header files (*.h) in to my project. I mean header files which are not included to the standard installation package.

I thought it would work if I just copy the newheader.h file in to library folder c:MinGWinclude, but it didn't work. Is there some kinf of GCC -command or procedure to add these single header files or how it should work?

All of those standard header files are working well and I don't have any problems with them.

Environment I'm using is MinGW+GCC+Win7.

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C++ :: Why Is It Valid To Include Header Files Twice In A Project

May 12, 2013

if I include iostream twice in my project why is that valid? Wouldn't the linker see that there are two definitions of it and report a error, but it works?

By project I mean in multiple translation units.

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C/C++ :: MSDOS Cannot Include Header Files?

Oct 13, 2012

msdos is present on my computer but it cannot include the header files but when i check all files are present but they still cannot include????????

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C/C++ :: Print Single Linked List Backward With Functions / Classes - Error Message Regarding Header Files

Oct 11, 2014

I'm trying to print a single linked list backward with functions/classes. I have created the main file and 3 header files. But I'm getting an error on one of the header files, linkedListIterator after adding #include "linkedListType.h". It says that "linkedLlistType.h" is calling itself. And when I try to run it, I get an error of "too many header files." I have tried changing the headers many times, but nothing seems to work.

.cpp file:

/*(Printing a single linked list backward) Include the functions reversePrint and recursiveReversePrint, as discussed in this chapter, in the class linkedListType. Also, write a program function to print a (single) linked list backward. (Use either the class unorderedLinkedList or the class orderedLinkedList to test your function.)*/

#include "linkedListType.h"
#include "orderedLinkedList.h"
#include "linkedListIterator.h"
#include <iostream>
using namespace std;
struct nodeType

[Code] ....

header files:
[URL] .... (error in this header file)
[URL] ....

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Visual C++ :: Should Precompiled Header Files Also Be Included In Source Header Files?

Sep 16, 2013

When including a header file in stdafx.h, should that file still be included in the source file where it is actually used?

If it is included in both places, is the one in the source file ignored?

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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/C++ :: Unable To Include A Header Into Application?

Aug 16, 2012

I've downloaded a file that I need to include in a new project. It's called phidget21.h and it's sat on my desktop. I've tried copying it to lots of various places. But I still can't get a new source file to compile. I think I haven't copied it to the right place yet. Where should I have copied it to?

#include <cstdlib>
#include <iostream>
#include <phidgets21.h>  

[Code]....

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C++ :: Compile Multiple Programs Stored Under A Single Project

Feb 21, 2015

I have started using code::blocks for practicing ,(was using bloodshed dev C++ til now). The thing is that m not able to compile multiple programs stored under a single project , as i have created project by the name of a topic and have decided to solve all problems related to that topic under that project.

When there was only one .cpp file in the project it compiled successfully ,but as soon as i created a second file and compiled it it says "main can be declared only once"

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C++ :: Where To Put The Include Directive And Using Namespace Std With Multiple Files

Aug 23, 2014

I have two files that I want to compile:

main.cpp
Code:
#include <iostream>
using namespace std;
int ReadNumber();
void WriteAnswer();

[Code] .....

The compiler complains:
io.cpp||In function 'int ReadNumber()':|
io.cpp|3|error: 'cin' was not declared in this scope|
io.cpp||In function 'void WriteAnswer()':|
io.cpp|7|error: 'cout' was not declared in this scope|
io.cpp|7|error: 'endl' was not declared in this scope|

In io.cpp file, should I put the two statements ("include <iostream>" and "using namespace std") at the top, outside of the functions?

Or should I put the two statements inside each of the functions?

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C/C++ :: Include (Text) Files From Directory (1 By 1) Automatically And Print It

Jun 10, 2014

#include<iostream>
#include<conio.h>
#include<fstream>
#include<windows.h>
using namespace std;
int main(){
string ptr,a;
string b="E:project";

[Code] ....

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C++ :: Base Project - Restrict Header File Inclusion

Aug 21, 2014

I have one requirement. I have a project lets Say baseProject.vcxproj. It has some header files. Another project lets say dependentProject.vcxproj loads baseProjects's dll and uses some of its header files.

When some other project lets say unrelatedProejct includes the header file from e dependentproject which includes baseproject's header file. It makes to change the include driectory setting of unrelatedproject. How to avoid this.?

baseproject

base.h
{
}
dependentProject
dependent.h

[Code] .....

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C++ :: Retrieve Information From Two Files And Put Them In A Single File

Nov 23, 2013

I created a simple program that writes some text to two different text files. how to create a program that would retrieve the information from those two files, and put them in a single file, first the content of input1 and then the content of input2. how to do this. Here is the program that I created that creates the two files.

#include <iostream>
#include <fstream>
#include <string>
int main() {
using namespace std;
string input1;
ofstream fout("input1.txt");

[Code]...

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C++ :: Processing Multiple Files From Single Directory?

Feb 21, 2012

I've tried to form together the following code so that I can process multiple files from one user specified directory. However, when I run the program it works great for the first file, but all other files are blank. The problem starts on the following line:

while(FileIn.good())

//---------------------------------------------------
#include <fstream>
#include <iostream>
#include <dirent.h>
#include <sys/stat.h>
using namespace std;
struct dirent *dirp;

[code]....

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C++ :: Project Contain Three Files - Compiling Error

May 10, 2014

I am working on a small project which contains three files

1. MainTest.cpp
2. CashRegister.h
3. CashRegister.cpp

I have done everything that suppose to be done but still I am getting an error and can not execute the program....

Code:
// MainTest.cpp
#include <iomanip>
using std::setw;
using std::left;
#include <iostream>
using std::cout;

[Code] ....

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Apr 18, 2014

Is it possible to store multiple project files in one projects solution explorer?

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C++ :: Phonebook Project That Writes And Reads From Text Files Using Arrays

Dec 15, 2014

My problem is when I try to show the contents of my text files after I add a contact it wont show me anything.

#include <iostream>
#include <conio.h>
#include <string>
#include <windows.h>
#include <fstream>
#include <cstdlib>
using namespace std;
//prototypes
void printline(char, int);

[code].....

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C :: Header Files Not Found On Mac

Nov 2, 2013

I have a piece of code in C with header files included. I run it on Mac OS X Maverick with XCode 4.6.2 installed. GCC is also installed. Note that Command Line Tools in XCode are already installed.

When I compile it, the error I receive says something like this:

add.c:1:19: error: stdio.h: No such file or directory add.c:2:20: error: stdlib.h: No such file or directory add.c:3:20: error: unistd.h: No such file or directory

However when I run it on Ubuntu, it compiles without a problem.What to do?

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C++ :: Using Namespaces In Header Files

Dec 9, 2013

So I've been making a header file and put variables in their own namespace to avoid conflicts. My question is, do functions in the header file normally go in a namespace too, or should they just be named in a way which makes them unlikely to be accidentally copied?

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C++ :: Precompiled Header Files

Apr 2, 2013

My teacher talks about header files just having definitions and not declerations. I am writing a program that has a .h file and a related .cpp file along with a main.cpp it would be nice to have the .cpp file associated with the .h file compiled into an object file that would than just be referenced when the .h file is included. Am I making any sense?

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C++ :: How To Use Two Header Files In Program

Sep 17, 2013

I want to use two header files in my program. Here is exactly what I want to do.

-In the first header I have a binary tree and a structure.
-In the second file I have another functions that need to use the structure in the first header.
-I also want to use a function from the second header in the first.
-And finally I want to do actions with both headers in a "main.cpp" file that contains only int main() function.

How to include the headers in each other and in the main.cpp to be able to do the actions above?

I try to include the first header in the second one and the second one in the first header. Then I include both headers in the main.cpp file. But the compiler shows me many errors.

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C++ :: Two Header Files - How To Use Namespace

May 2, 2013

I have two header files, A, B.

A.h
namespace test {
struct info
{
int a;
}
}

B.h

#include "A.h"
int main {
test::info.a = 10;
}

However, it has an error. I don't quite understand how to use namespace.

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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 :: How To Deal With Conflicts In Header Files

Nov 6, 2013

I have some header files with generic functions. And in one of them, I define TRUE and FALSE. Recently I started using another header file and it defined TRUE and FALSE as well. That caused GCC to throw an error, and not compile. In my case I can put #IFNDEF around the values so that if it is already defined they don't get defined again, but is there a better way to handle duplicate names? I assume the case would be the same for duplicated functions, how does that get handled?

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C :: Making Header Files With Extension?

Mar 6, 2015

I have a problem with making header files in c, i get the code written only in main.c and then i have to create a files with extension .h and extension .c but how to do it.

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C++ :: Using A Header File Across Multiple Files?

Aug 2, 2014

So say I create a header file which contains a list of structs, and I want to use these structs through out my source and some of my classes... how would I accomplish this?

When I try to do it via #include, I get re-definition errors, due to the nature of #pragma once. If I switch to #ifndef then I lack defenitions in files other than the source.

Is there a way to define things such as structs across multiple files, which doesn't lead to re-definition errors, and doesn't involve manually re-created all the structs for each file?

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C++ :: How To Make Header Files Work

Dec 3, 2013

I'm having with header files, specifically to do with the string data type. The objects work perfectly when I put them inside the .cpp but when I set it to include the exact same code in a .h, I get a string of error messages.

class Topic
{
private:
string NInfo, SInfo, EInfo, WInfo, Name ;
bool Quest ;

[code]....

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