C++ :: How To Share Information In Multi File Project
Dec 9, 2013
this last few days I've been coding this one particular file
Hero.cpp
namespace Hero {
namespace {
// all data here
}
}
then the code grew a bit to about 700 line
Then now I want to implement hero skill system It needs the access to data inside the unnamed namespace where I put just about everything.. but it's unnamed namespace, it's only valid within one file and I should hide all that data from Hero interface in Hero.h How should I do this ?
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May 3, 2013
I'll just tell you in short how my Problem looks like: I should implement a New Class in a SourceCode i didnt write myself. The source code is extremely sized (i think approx >100.000 Lines of Code), so i dont want to change too much in it in order to get my Implementation done.
MY problem looks simplicified like that: Starting from 3 classes and my new class the pseudo-code looks like that:
Class1(){
float* m_CalibX, m_CalibY;
.. }
Class2(){
char* m_ImageData[];
[Code] .....
So, i need Parameters from 3 different classes to insert in my NewClass. The 3 Classes dont know anyting about each other. So, i need to implement a Class-Instance from Type NewClass which is known by the other 3 Classes. I did solve it in this way:
//ClassInstance.h
#include "NewClass.h"
static NewClass ClassInstance
I just wrote a headerfile with a class-instance which is getting included by the other 3 Classes. So they all know the same Instance and writing their Parameters into it. Is this a decent solution or could it happen to get bugs/ logical mistakes with it?
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Apr 8, 2015
Have everything working fine as far as input and functions.. I am supposed to output the information as a table. I started to write a void function in order to complete this task. I know how to output the information if i were to have an array for the months, but how to display the months when I am using a switch statement.
#include <iostream>
#include <cstring>
#include <iomanip>
/* author: John Pierce
Description: program reads in averages, then prompts user for current month. The program then
continues to prompt the user for the rain fall amounts for the previous year. */
using namespace std;
void printMonth(int month);
[code].....
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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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Jul 2, 2014
Basically i'm willing to create an application which could share Video,Mp3 Over the internet to my friends.
For suppose I'm hosting file on my PC, and i want to share "D" Drive to my friends but they aren't connected to my network locally. i want to share movies over the internet using a host and client application in c#.net.
the purpose of this application is very clear that that i want to share movies over the internet and they have to be able to watch movies on their PCs Except running my PC remotely.
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Jul 21, 2012
I have a compressor that takes a file and first compresses it to an intermediate file "temp.lz", before compressing it to the final format. Immediately after that the file be removed by calling c's remove(char*). The problem I am afraid of is if calling this compressor from different processes is safe because of the intermediate file created which has the same name for all. (say temp.lz). Will I have problems when callinga sytem call from different process something like: system ("compress -i test.txt -o test.z") ?
I was thinking of rewriting the compressor to avoid the use of the temporary file but that is a bit awkward. I just need to use a temporary stream (file) different for each process to avoid race conditions.
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Apr 12, 2013
I'm very new to MFC & VisualC++. I'm using MSVS2010 Pro. I am trying to write/debug a simple form that saves and restores the content of some edit controls. It seems to work as expected, except the file saves only to the Project Folder, regardless of where I browse and select to save the file.
Code:
void CMFC_FileDialogDlg::OnBnClickedbtnsave() {
this->UpdateData();
CFile f;
//Kinda Correct, Works but still saves in Project Folder
BOOL b_OpenFileDialog = FALSE;//this doesn't act as bool in CFileDialog?
[Code] ....
My only experience is a little simple VB programming in Excel, so any specific examples??? Also, rules seem to change from version to version? I have to "update" a number of undocumented programs.
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Apr 2, 2014
I am wondering how to share a variable in 3 classes. For example:
variable class:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
[Code] ...
class that edits the variable:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
[code]......
The actual program:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
[code]......
What should happen when this runs is this:
Variable changed in program: 0
Same variable changed in a different class: 1
Instead, this happens:
Variable changed in program: 0
Same variable changed in a different class: 0
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Jul 31, 2013
//---------------------------------------------------------------------------------------
//FUNCTION: vDelEditStudents()
//---------------------------------------------------------------------------------------
void vDelEditStudents() {
FILE *file = fopen("C:UserForCtxtgiro.txt", "rb");
Student StdStruct;
fseek(file, -sizeof(StdStruct) , SEEK_END);
fread(&StdStruct, sizeof(StdStruct), 1, file);
[Code] ....
The problem is that ... Even though it is reading from a a file, it is not reading a one struct. In this piece of code I'm trying to read the last struct, which should be k... The struct itself is here
Code:
typedef struct {
char StudentName[30];
uint16 StdAge;
uint16 StdNumb;
}Student;
And here is my input and output:
INPUT:
4
1 g 1 2
1 h 3 4
1 j 5 6
1 k 7 8
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Apr 12, 2014
I need to read some infos out of a .txt-file.
The problem is that i dont know how to do because 'getline' won't work i think.
the file looks like this:
*******************
Inventory of MyInventory
*******************
Some info
More info
-------------------
000 Toys 6.25
a short description
126/44 Cards 2.25
some text
*******************
Inventory of MyInventory2
*******************
Some info
More info
-------------------
000 Toys 6.25
a short description
126/44 Cards 2.25
some text
So what I need to know:
- the name of the Inventory (MyInventory, MyInventory2...)
- the numbers in each row (000,126/44...)
- the name what it is (Toys,Cards...)
- the price (6.25,2.25...)
- and the description(problem here is, that there are not the same amount of words for each description)
I tried it with 'getline' but this is not working because the lines are so different each time.
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Nov 13, 2014
I want to receive an information from a file. For instance, you created a file name "sample.txt" via fstream and stored a bunch of people's name, address, phone number in that "sample.txt".
Now, I want to see what's stored in this file. Suppose, I wanted some particular guys address, phone number by just typing is his/her name.
How to relate the name with address and phone number of particular people? I just started the file creating so I wanted to know about it.
#include<iostream>
#include<conio.h>
#include<fstream>
#include<string>
using namespace std;
int main() {
ofstream outputData;
[code].....
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Jan 22, 2014
I have a project which does a specific thing, like an open file dialog.
I would like to open it in a different project on a click of a button.
Also, It has a different namespace.
I'm guessing that it would involve a "using" statement to add the namespace And I will have to add reference to an *.exe or *.dll -> I'll have to look up how to make a *.dll, I know where the *.exe file is.
I have searched for a different things on Google, but I don't think that I am looking for the correct phrase (which is always frustrating...)
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Mar 22, 2013
Code:
#ifndef CANDIES_H
#define CANDIES_H
#include <iostream>
#include <fstream>
#include <Global.h>
class Candies
[Code]...
Code:
#include "Candies.h"
#include <Windows.h>
#include <iostream>
#include <fstream>
#include <sstream>
[Code]...
When I tested it, the file name in getName() outputted the right file name. However the file name in loadName() does not print out anything in the console window.
I want it to be so that the strings in [I]name_addTXT.c_str() in both functions are equal.
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Jan 23, 2013
I am getting some problem in a dynamic/share library I am using with my code. Restarting my application solves the problem.
tell me any safe way to reinitialize kind of mechanism for dynamic loaded libraries with minimum code changes in my application?
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Mar 16, 2012
Here is what I did,
Code:
// A.h
const int salary = 1000000;
// B.h
extern const int salary = 1000000;
But I still got multi-definition errors. How should I fix it?
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Feb 6, 2013
How to rename a textfile in a Visual C++ CLI GUI project. I've tried using the 'rename()' function but that isn't working for me (probably because of the type of project).
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Mar 12, 2013
I'm trying to add more student information to the specific txt file. I did struct my student information and separated it with an array with max size of 200.
The inside of my current file looks like
Toshi
Aka
Nonal
Donald
The first one represent student[0] and next one is student[1] and so on till student[199]. Right now, only 4 space is occupied, which means the array has information till student[3] but not from student[4] (I guess it has null condition).
What I want to do is, I want to add a new student information to student[4] and till student[199] once at each time.
So, my prompt will look like
Would like to add a new student? Y/N
(if yes goes to below statement and exit if NO)
Hi. Please enter the information of new student. ___________
Student added. Please press any key to continue.
If the key is pressed, it goes back to my initial prompt and continues till I press N.
I sure I'm not using for loop to do this thing, because I'm adding student name one by one.
However, the array is already occupied by other student name till student[3] so, I want to add a new student information to student[4] (I don't want to overwrite the current information). And if student[4] is occupied, then [5] and so on.
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Jan 12, 2014
I want to take the informaition from this file and save it into a struct the file conteins name age year (in char) and a grade it is somthing like this
file
Nikos Tolis 19 A 8
Iwanna Nikolaou 20 B 9
Kwstas Doukas 20 Β 6
Georgios Pappas 19 A 7
Iwannis Lekatis 20 Β 7
Nikos Ntoumas 19 A 5
Maria Oikonomou 20 B 6
Kwstas Argyrou 19 A 10
Irw Ntouma 20 B 8
Leuteris Doukas 19 A 6
I want to read till i found the '32' the space in ascii here is my code so far
Code:
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
struct students
{
char *name;
int age;
[Code] ....
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Jul 31, 2014
I am trying to parse a text file that contains information and i cant seem to get started. For example, the text file looks like this:
idx=929392, pl= 12, name= someperson
age=19
state=ma
status=n/a
idx=929393, pl= 12, name= someperson2
age=20
state=ma
status=n/a
idx=929394, pl= 12, name= someperson3
age=21
state=ma
status=n/a
I want to parse the name and age into another text file like this format:
someperson 19
someperson 20
someperson 21
possibly include other attributes next to the age like idx?
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Apr 20, 2015
Create a simple data file like the example shown below containing the 4 dates below plus 10 or more additional dates. The file should include 1 date per line and each date should have the form MonthNumber-DayOfTheMonth-Last2DigitsOfTheYear with no extra spaces. All dates should be in this century. No error checking for invalid dates is necessary.
My Output displays like
February -19,1991
How do I get my program to ignore the dash between the dates?
#include <fstream>
#include <iostream>
#include <string>
#include <cmath>
using namespace std;
int main(){
const int M = 13;
[code]....
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Nov 24, 2013
In general, my problem is that I've been trying to reorganize the project I and my group are working on into separate project files. Everything was working perfectly fine before, but now I'm facing the wrath of undefined reference errors when I try to call my DLL functions.
I have them declared and included in the central header file here :
Code:
/* DLL functions */
typedef void ( * t_wait )( int milliseconds, const int frames_per_seconds );
typedef clock_t ( * ft_timer )( int command, t_timer * timer_object ); /* clock_t is usually defined as long */
typedef void ( * t_SDL_errorexit )( const char * message );
typedef SDL_Surface * ( * t_load_image )( char * image_path, unsigned is_transparent );
[Code]...
Then I have them imported here :
Code:
/* ******************************************************** */
/* ********* win_error( char *, bool ) ********* */
/* ******************************************************** */
/* - Displays a GUI for a windows specific error message, */
/* pass true to it to have it exit the program, pass false */
/* to have it continue */
/* ******************************************************** */
extern void win_error( char * message, bool is_exit )
{
/* Note : win_error uses the Win32 Api */
/* ********************************** */
char buffer[BUFSIZ] = { 0 }; /*
[code]...
This doesn't work, as my compiler sees it that I am trying to call invalid functions, whereas I have made sure to import the functions before calling. Obviously my compiler can't tell that, and is trying to protect me from calling them.
The source files are compiled as C++, but I'm using C-style code instead of true C++ code.
Obviously I'm using Windows style DLL linking, but if the only ways to share imported functions are non-standard, only post ways that will work on as low as Windows XP.
I have tried to statically link them before, but that led to a problem that I posted a while back. Which led me to dynamically linking, which was problem-free until I separated my code into separate files.
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Dec 8, 2014
I want to create 2 different easy processes in C++ 1st and then i wanted to share data between these 2 processes.
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Oct 27, 2012
I have a dll file and i want to add this dll file in my c#.net project reference through a program. I know I can add it by clicking copying and paste ,but i want to add reference programmatically.
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May 18, 2013
i have written a student information storing program. it has add,delete,list,and update menu (in program i have written update == uptade,i know : P )
my question is i cant delete or update the information. where is my failure ?
Code:
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<conio.h>
#define max 3
struct og {
char id[12];
[Code]...
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May 6, 2013
my program wont output any information to the text file that I have specified it just creates it but it leaves it blank
#include <iostream>
#include<string>
#include<iomanip>
#include <fstream>
using namespace std;
class Carloan
[code]....
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Aug 28, 2014
I'm trying to open a file (contains member information) and store the information in an object, which is then inserted into a linked list. However, the current code just leaves a blank command window hanging with nothing happening.
main.cpp - [URL] ....
MemberProf.h - [URL] ....
MemberProf.cpp - [URL] ....
LinkedList.h -[URL] ....
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