Visual C++ :: How To Keep Within Boundaries And Perform The Function

Dec 26, 2014

I am really unsure how to keep within the boundries and still perform the function I need. My code functions normal when I have both categories 'buy' and 'sell' in the queue which is my main goal and I should be clocked out on this function BUT, If the queue is missing all 'sell' data, it segment faults.

I don't want to change any of the functionality, just get rid of the segment fault error. It appears b < buydat.size() and buydat[b+1] are in conflict. The purpose of the algorithm is capture the record sets in groups of 7 from data coming in from the www as strings. In that group/set, I pattern match for the string 'Buy' and if true, insert record into vector for processing. I also need the price (y = 3)

How do I capture buydat[2] and buydat[3] in groups of 7 without a segment fault?

Code:
void buymngr(){
//vector defs
vector<std::string> buydat;
vector<std::string> markdat;
vector<std::string> pricedat;
vector<std::string> qworkcoin;
buydat = getmyData();

[Code] ....

When one buy and one sell are sitting in the queue. Code functions as expected:

gentoo-mini # ./masterMain

Code:
I got my own data
I just got market buy data
Bork!
Bork2!
You 'do' have buy string match data!
my max price is 0.00492975 at position 0

[Code] ....

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Visual C++ :: Create A Program That Perform Same Calculation For Every Oscillation

Jan 17, 2014

I am reading from a text file and want to create a program that will perform the same calculation for every oscillation.

The text file I'm reading from is attached to this post. A3.txt

The program that I've written is as follows:

Code:
#include <iostream>
#include <fstream>
using namespace std;
int main() {
ifstream inFile ("AP1.txt");
ofstream results_file ("APDuration.txt");

[Code]...

Where I'm having trouble is in having the inFile.seekg function iterate to the next series of values.

Here is what the data file looks like in a graph:

In a nutshell, my program will read the duration of each action potential from a point called "dVmax" (where the upstroke is at its maximum upward rate of change) to the point of 90% repolarization (on the downstroke where 90% of the total wave amplitude is subtracted from the volts at peak amplitude).

If you would like to test my program on one action potential, here is one action potential : AP1.txt

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Sep 17, 2014

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Aug 2, 2013

I have a input record like

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Now I need to create a logic to append a code to the end of the file using the following matrix rules.

00NNNN
01NNNY
02NNYN
03NNYY
04NYNN
05NYNY
06NYYN
07NYYY

[code].....

In the above example these four flags are "N|Y|N|N", so I need to append the matching code at the end of file "04".

desired output :

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as it matches code '04':

04NYNN

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May 15, 2013

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Sep 19, 2013

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#include<iostream>
using namespace std;
struct Ok
{
int x;
int y;
};

Ok operator-(const Ok& a , const Ok& b)

{
Ok result;
result = (a - b);
return result;
}
int main()

[Code]...

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Dec 16, 2014

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for (int i = 0; i < DataFilter.Rows.Count; i++) {
DataRow dr = DataFilter.Rows[i];
DataView dv2 = new DataView();
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[Code] ......

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Jul 13, 2013

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I feel that it would best to demonstrate my issue rather than try and explain it.

Sample:

// Fundamental object structure
template<int T> struct myInt
{
myInt() { value = T; };

[Code]....

What I don't know is how to get a hold of the T variable to add them through the 'add' structure. Also, might any of this have to do with sequence wrappers?

seq_c<T,c1,c2,... cn> is essentially what I'm thinking of. Where T in this case is the type and c to the nth c are the values.

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struct st
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Jan 16, 2014

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Code:

#include<stdio.h>
#include<stdlib.h>
struct node{
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[Code]....

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Oct 18, 2014

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s – search
i – insert
a – append
d – delete
a – append
d – delete
r – replace
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here is what i have so far.

#include <iostream>
#include <cstring>
using namespace std;
int main() {
char a_string[80];

[Code] .....

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Mar 22, 2013

I'm doing a refresher for C++ and have gotten to operator overloading. I'm trying to perform an operator overload with the insertion (<<) operator, but I have encountered a problem.

Here's my class [In a header file "Shinigami.h"]

#include<string>
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[Code] .....

If the operator function is a friend of the 'Shinigami' class, why doesn't it recognize any of it's private members? I need it to be in this file because I'm doing a bit of association with the 'Quincy' class.

I thought it was the namespace, but I included that.

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Mar 19, 2013

I searched the web for error: C3867... and the discussions where murky or obscure.

My code excerpt is:

#pragma once
#include <windows.h>
#include <stdlib.h>
#include <process.h>
void PutUpfrmIO(void *);
namespace WordParsor {

[Code] .....

I get the generic message:

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One person suggested the gcroot<> object wrapper... but I do not know how to modify/declair the function or its argument type.

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void Non_Member_Get_PorpertyPage()
{
CMyPorpertyPageDlg* pPageDlg = ....
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Code:
cv::Size output_size
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There are still function names clashing.

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I have the code:

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{
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}

then i call it in thread

Code:
void CMFCApplication1Dlg::OnBnClickedButton3()
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Is there a function that can take out part of the string such as,

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Oct 24, 2013

In my Header file:

class MyData {
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bool flag;
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Now in CPP file:

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Fparams fParam;
fparam = AllData();

[Code] ....

Now i get an error saying - error: no match for 'operator=' in fparam = AllData(); ........

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Apr 9, 2014

The code is bulit for the x64 platform with unicode enabled.

Code:
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};
void CameraExporter::BeginEditParams(Interface* ip,IUtil* iu) {

[Code] .....

Error2error LNK2019: unresolved external symbol "public: static __int64 __cdecl CameraExporter::DlgProc(struct HWND__ *,unsigned int,unsigned __int64,__int64)" (?DlgProc@CameraExporter@@SA_JPEAUHWND__@@I_K_J@Z) referenced in function "public: virtual void __cdecl CameraExporter::BeginEditParams(class Interface *,class IUtil *)" (?BeginEditParams@CameraExporter@@UEAAXPEAVInterface@@PEAVIUtil@@@Z)e:Jackydocumentsvisual studio 2010ProjectsCameraExporterCameraExporterCameraExporter.objCameraExporter

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Feb 7, 2013

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Code:
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May 5, 2013

Visual C++ 2010

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The handle happens to be a sprite defined as: sf::Sprite Numbers(MyNumbers);

Now I want to pass "Numbers" to a function.

-
-
getFrame(Numbers);
-
-
???? getFrame(??????) {
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return ????
}

How do I do this?

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Nov 27, 2013

If there are two projects A and B. A is created as .dll, while B is created as static library.

project A has a class "classA"
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public:
testA();
};

project B has a class "classB"
classB {
public:
testB();
} ;

I want to make a symbol of classB::testB() in A.exp (like ?testB@classB@@QAEXXZ), can I do it by using __declspec(dllexport)?

Also if I make classB as a template class, can the symbol of classB::testB() be generated automatically in A.exp when building project A?

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Oct 18, 2013

Consider the following code:

Code:
template<class TYPE>
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If I declared that code in a header file I'd be able to call it with an int, float, double or whatever. But where does the actual code get instantiated? Is it effectively inlined?

What I'm wondering is if there'd ever be any scenario for putting such code in a DLL - e.g.

Code:
#ifdef BUILDING_MY_DLL
#define MY_DLL_API __declspec(dllexport)
#else
#define MY_DLL_API __declspec(dllimport)
#endif
template<class TYPE>
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cout <<"Double = " << data * 2 << endl;
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I just tried it and was slightly surprised to find it wouldn't compile. It compiles fine when actually building the DLL but when I try to build something else which uses that DLL I get compiler error C2491 (definition of dllimport function not allowed).

I guess that kinda makes sense if template functions are effectively inlined... or is there some other explanation....

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From this article: [URL] ....

I am unfamiliar with this function with the -> operator?

Code:
auto begin(strip const & s) -> char const *
{
return s.first;
}

Is this code the same?

Code:
char const* begin (strip const& s) {
return s.first;
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