C++ :: How To Add Excel Library Or Include Headers
Jul 16, 2013I want to read/write the excel sheet using C++. how to add the excel library or include the headers ?
Inot possible than is there any other way to work on Excel using C++.
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Visual C++ :: How To Configure Additional Include Headers
Jun 16, 2014I want to include boost directory. What must be in the Additional Include Directories input?
I tried
C:C++boost_1_55_0libsaccumulatorsexample;$(BOOST_ROOT);%(AdditionalIncludeDirectories)
But I am still getting error "Cannot open include file: 'boost/libs/accumulators/lambda/lambda.hpp': No such file or directory" when I include
Code:
#include <boost/libs/accumulators/lambda/lambda.hpp>
The file is placed out side of boost directory of sure.
Visual C++ :: Additional Include And Library Directories
Nov 19, 2012For each project in a VS solution it's possible to stipulate per-project folders that get searched in addition to the folders that you've set globally for Visual Studio.
Which folders take priority? Do the project's folders get searched first? Or do the global folder get searched first? Or is it possible to select one set as having priority over the other?
(this is VS 2005 BTW)
Visual C++ :: Include Library Paths In VS 2012 Through The New Property Pages?
Jan 30, 2013I am trying to include library paths in VS 2012 through the new property pages.I downloaded and installed mpich2-64 bit libraries under "C:Program FilesMPICH2include" and set the include path in Microsoft.cpp.x64.user property file so the path now looks like
Code:
"$(VCInstallDir)include;$(VCInstallDir)atlmfcinclude;$(WindowsSDK_IncludePath);C:Program FilesMPICH2include;"
But somehow it fails to find the files.
Code:
fatal error C1083: Cannot open include file: 'mpi.h': No such file or directory
The file is definitely there, so what could be the problem ?
C++ :: Getting Data From Excel - CSV File Or Data Library?
Jan 30, 2013I am very very new to C++. A bit of background. I have been writing in excel vba for large number crunching, and the code is now taking quite a while to run. A friend of mine suggested i start writing in C++, so i read up on it. And downloaded Code:Blocks.
My VBA Code is:
Sub arrayss()
Dim NameArray As Variant
Dim datarray As Byte
Dim DirectionArray As Variant
Dim WinArr As Variant
[Code] .....
Ultimately i would like to recode this to C++, but my first and probably silly question is how do i get the data from Excel to use in C++. I was thinking either to put the data in 3 csv files and convert into three Arrays in C++. Or maybe create a library of the data in C++. Ultimately it is speed i am looking for, so before i start recoding i wanted to start with the best way.
The data is like this in excel: (don't know how to create a table)
ABC DCA GFE THE
15 0 1 0 1
30 1 0 1 0
45 1 1 0
00 0 0 1
15 1 1 0
15 1 0 0 1
15 0 1 1 1
30 1 0 0
45 1 1 1
So the headers would be in one array, the 15's, 30's etc would be in another array and the 1's and 0's and Empty ( i need it to record an empty cell) would be in another array...
C Sharp :: Filter Excel Sheets Through C# While Importing Excel Data To Database?
Mar 1, 2013private String[] GetExcelSheetNames(string excelFile) {
OleDbConnection objConn = null;
SqlConnection objSqlConn = null;
System.Data.DataTable dt = null;
try {
[code].....
Now I can fatch all the excel sheet belongs to the Excel File.But How can I check "If and Only If the sheets are havin Underscore in their name(eg. student_data,teachers_data) then only the data of the sheets will populate in tha data base"
C++ :: Headers With Multiple CPP Files
Mar 22, 2013So I have a rather large (for me) project, requiring me to have two .cpp files and a header. Anyway, both of the .cpp files #include the header file, but I recieve linker errors because the variables and functions in the header are declared and defined twice (once in each .cpp file). How am I supposed to do this?
View 8 Replies View RelatedC++ :: Headers And Objects Files
May 20, 2013I have a question regarding how GCC relates a header file and its binary file.
main.c
#include <math.h>
#include <stdio.h>
int main (void){
double x = sqrt (2.0);
printf ("The square root of 2.0 is %f
", x);
return 0;
}
we can compile it by running the line: gcc main.c -lm -o main
My question is: How GCC knows where is the definition of sqrt?
First I was thinking that there was and object file with the name math.o inside libm.a (that is GCC will look for an object file with the same name as the header file), but after running the next line I think my assumption was wrong as there is not such file in libm.a.
nm libm.a | grep math.o
nm: e_acos.o: no symbols
nm: k_cos.o: no symbols
nm: k_sin.o: no symbols
[Code] ....
C++ :: Reading BMP Files Headers
Apr 19, 2013Code:
struct magic {
char windowsheader[2];
} magicnumbers;
struct bmp {
unsigned int sizeofthefile;
short int applicationspecific1;
[Code] .....
When I run this program, seems like it is working,at least I am sure that it gives the right file size. But if I don't use struct magic and instead use:
Code:
struct bmp {
char windowsheader[2];
unsigned int sizeofthefile;
short int applicationspecific1;
short int applicationspecific2;
//same lines with above
} bitmap_header;
And if I don't use first fread:
Code:
fread(&magicnumbers,sizeof(magicnumbers),1,fp);
Then the values which structure "bmp"'s variables get become wrong. Of course I change the related printf to:
Code:
printf("
windowsheader:%d %d
",bitmap_header.windowsheader[0],bitmap_header.windowsheader[1]);
Why does the problem happen,what is the difference between them?Why do I have to use separate structs?
C++ :: Hide Class Implementations Using Headers?
Oct 16, 2013I am currently working on data abstraction. I was able to write a class (a simple clock, see Malik's C++ book, Chapter 12 for reference). As you can imagine, I am quite new to programming and C++.
Well, now I created a header file clock.h that includes the class definition and function prototypes as well as a implementation.cpp file with the implementation details of the class.
I managed to include all this in my program.cpp and compile it (using dev c++). Everything works exactly as I want it to.
So now my question is, how can I create ... I am not sure how it is called ... a header, but without revealing to the user how the functions are implemented. Basically the user should get a file (the object code of the header + implementation.cpp?) and simply #include it into his own program.
So instead of giving the original header + implementation.cpp to the user I want to hide how my class does its stuff and instead just provide some file that can be included and then used in a program (I will write a documentation how to use the class).
I am not sure how all this is called, I am sure there is some name for it...
C/C++ :: Write Headers For Member Functions
Mar 5, 2014Assume a class named Dollars exists. Write the headers for member functions that overload the prefix and postfix ++ operators for that class.
View 1 Replies View RelatedC :: Putting Functions / Headers In Separate Files?
Aug 2, 2013I have just learned about how one can put functions and headers in different files from the main() function. I was wondering if there is a rule of thumb of when and when not to separate the two, or if it's merely preference. Is there perhaps an "industry standard" regarding this, for those who program in C for a living?
View 4 Replies View RelatedC++ :: Testing HTTP Headers - For Loop And Strings
Jun 23, 2014I am testing HTTP Headers and I have an strange problem. When I get the response of the server, it is the correct one the first time. If I use a for loop to send more than one request and get more than one response, this response seems to be overlapped with the previous ones. To a better explanation of the problem I attach the code I am using and the output generated:
TCPSocket.h
-----------
#ifndef _TCPSOCKET_H_
#define _TCPSOCKET_H_
class TCPSocket {
private:
int localSocket;
[Code] .....
So, a bigger loop, a bigger the response of the server. However, I know the response of the server is always the same.
C++ :: Shared Library Vs Static Library?
Jan 17, 2014I've been reading about libraries; How to make them, how to use them, the different types of libraries, etc..
When using a shared library, does the program require that library to be installed on the computer after the program has been compiled into an .exe?
Ie.. if somebody downloaded a "Helloworld.exe" that I had compiled on my computer using a shared library (that wasn't part of a standard operating system), would they also need that shared library on their computer for the program to run without errors?
and for Static Libraries, when I compile a program using a static library, does it include in the final binary only the functions of the library that are actually used, or does the compiler add in the entire library?
C/C++ :: How To Include Whitespace In Queue
Feb 21, 2014my code is already finished. im using parallel queues and im having problem in the queue customer name if i dont input space the code is fine but if i input space in the name it skips the bagcode and immediately jump to the number of bags what can i do to include the white spaces in the customer name and push it to the queue?
here's my code
#include <iostream>
#include <string>
#include <queue>
#include<conio.h>
using namespace std;
int main() {
queue<string> customer;
[code].....
C++ :: Include Function From Header File?
Feb 21, 2013I 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.
C++ :: Complex If Statement Does Not Include NOT Operator
Feb 7, 2015I'm not sure if I was some weird syntax problem or the way Ive ordered things. But a conditional statement I have created is not performing the way I want it to.
else if ( !( xDif == -1 && yDif == 1 && prevXDif == 1 && prevYDif == 0 ) )
{
foundArr[lastX][lastY] = 1;
}
When debugging, the condition was activated with the values:
xDif = -1
yDif = 1
prevXDif = -1
prevYDif = 0
However, I want the condition not to follow through as I am using the 'NOT' or '!' operator to negative the entire statement. For some reason, the line of code within the else if is still running.
C++ :: How To Include JPEG File Into A Program
May 3, 2013How to include a jpeg file into a c++ program??
View 2 Replies View RelatedC++ :: Unable To Open Include File?
Oct 16, 2013my programme showing error 'unable to open inclde file ****' i fallowed the general procedure i.e., options-->directories--> ( inclde proper path) still not working..
View 2 Replies View RelatedC/C++ :: Unable To Include A Header Into Application?
Aug 16, 2012I'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]....
C/C++ :: MSDOS Cannot Include Header Files?
Oct 13, 2012msdos 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????????
View 1 Replies View RelatedC++ :: Where To Put The Include Directive And Using Namespace Std With Multiple Files
Aug 23, 2014I 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?
C :: How To Include Single Header Files Into Project
Oct 2, 2014I'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.
C :: Including Source File Twice But With Include Guard
Jun 14, 2014I have four source files. The main source file includes two other source files. The two other source files both include the fourth source file. In the fourth source file I have an include guard. Will the code from the fourth source file exist in two locations in the compiled code? Is this something that is compiler dependent? An example of this is shown in the code below.
Code:
// filename: main.c
#include "source1.c"
#include "source2.c"
[Code]....
C++ :: Call Stack Should Include All Active Sub-routines?
Feb 4, 2015I have a general question on Call Stack of Embedded uCs.
The Call Stack should include all the Active Sub-routines.
For example, in the following sequence:
Func 1 Starts -- Call Func2 --> Func 2 Starts -- Call Func3 --> Func 3 Starts --> YOU ARE HERE
The Stack should include the Return Addresses of Func 2's Body and Func 1's Body, Right?
At any certain moment (e.g. when the uC experiencing a SW Bug), Is it possible to have the uC to get all the Active Sub-Routines from the Stack and print them (e.g. for knowing it at the moment of Bug)?
It'd debug failures, when I don't work with a Debugger.
I know that Debuggers do that - i.e. show you the Call Stack at each moment - So I am wondering if I can get the uC to to it for me every time a bug occurs.
C++ :: How To Include Spaces In Counting String Characters
Jun 16, 2014So i have this program that's supposed to count all the characters including the spaces without using strlen but it only counts the number of the first word's characters and it does not include the rest of the words after the first space. how do i include spaces in the count?
#include <iostream>
#include <conio.h>
#include <stdio.h>
[Code].....