someone told me to download the latest source and build that so i did, by unzipping it, cding to the source, running ./bootstrap.sh, ./b2, and finally ./b2 install. when i compile i get no errors but when i run it i get ./jade: error while loading shared libraries: libboost_regex.so.1.55.0: cannot open shared object file: No such file or directory
class MyOwner { ... int m_count; bool b_locked; };
[Code] ....
I am using an API where I create many MyObjects on the heap, and the API uses a separate thread to send messages to each object. Each MyObject contains a pointer to MyOwner.
Suppose I want to keep a count of all messages received in all MyObjects: How can I do this in a thread safe way?
I am assuming that the code I have written above will not be safe--at the very least it seems that it would potentially miss message counts when it was locked--not the worse case scenario for me. I am most concerned about not causing the application to crash.
In interprocess communication(IPC) when processe have to share data among each other,why cant they all connect to one single file and share data with basic file handling functions such as read and write?
Why do we need
shared memory(shmget shmat(),shmdt()..etc) and mapped memory(mmap(),munmap()..etc)
I'm trying to write a program for a pong game using a tutorial online. Every time i try to run my program its telling me "Cannot find or open pdb file" I have tried running Microsoft visual c++ as administrator and checking the box next to the Microsoft symbol server. I only get a black console screen with a blinking cursor.
I am fairly new to programming and I am writing a small POS system which in the background creates a receipt. I guess the relevant code would be this:
#include <stdio.h> int main() { FILE *receipt; receipt = fopen("receipt.txt", "w"); fprintf(receipt, "Coffee Bar
[Code] ....
Of course the last bit wont be running for you, since the variables are missing. My question now is, that I like to open this file in a text editor. The file should be opened with a command withing the code. Is that possible at all? As you might can tell the receipt should pop up after the program ran and the user should be able to print it afterwards.
For homework I need to take a file of numbers (double) and fine their average. But, I seem to be having an issue just opening the file.
#include <iostream> #include <fstream> #include <cstdlib> using namespace std; void get_average(ifstream& input_file); // Precondition: Reads all the numbers from input file stream // Postcondition: Prints out to the screen the average of the numbers
Reading a .dat file, i'm unable to open the file. This program is for a Air Quality index detector, the AQI machine records the particle concentration every minute and saves it into new data file for each day. So I need to make this program run every minute and convert the concentration in to the AQI readings.
The filename is of the format "ES642_2013-11-09.dat", where ES642 is the software name of the machine, and rest is the year, month and day. The code here is just for the file reading section:
Code: #include <iostream> #include <fstream> #include <string> using namespace std;
'test.exe': Loaded 'C:UsersPcDocumentsVisual Studio 2010Projects estDebug est.exe', Symbols loaded. 'test.exe': Loaded 'C:WindowsSysWOW64 tdll.dll', Symbols loaded (source information stripped). 'test.exe': Loaded 'C:WindowsSysWOW64kernel32.dll', Symbols loaded (source information stripped).
[Code]...
The thread 'Win32 Thread' (0x2d0) has exited with code 1 (0x1).
The program '[6040] test.exe: Native' has exited with code 1 (0x1). my code is not wrong but there is an error which ı dont understand ...where is my error?
This my deposit function, i want to open the file (balance), then add the sum and store in on the text file.
float deposit( int x, int currentBalance) { cout<<" "<<endl; cout<<"Welcome to the deposit area"<<endl; cout << "Your new balance is:" << balance <<endl;
Need reading a .dat file, i'm unable to open the file
This program is for a Air Quality index detector, the AQI machine records the particle concentration every minute and saves it into new data file for each day. So I need to make this program run every minute and convert the concentration in to the AQI readings.
The filename is of the format "ES642_2013-11-09.dat", where ES642 is the software name of the machine, and rest is the year, month and day.
The code here is just for the file reading section:
#include <iostream> #include <fstream> #include <string> using namespace std; int main(int argc, const char * argv[]) {
my programme showing error 'unable to open inclde file ****' i fallowed the general procedure i.e., options-->directories--> ( inclde proper path) still not working..
and the file exists on disk, because the program just create it and closed the file handler. The error I got:
Debug assertion failed ... program name ... File: (and this is the strange thing!) f:ddvctoolscrt_bldself_x86crtsrcfstat64.c line:64
Why it displays this path? I did not added this path to project so why it tries to call this file? I have installed VC in different location and running x86 32bit machine.
I already succeed to run test raw_decode.c where I used libtiff.lib and libjpeg.lib also here I used the libraries. I already succeed to open file there using
Code: tif = TIFFOpen(srcfile,"r");
and srcfile = "./images/quad-tile.jpg.tiff".
Well I tried to use different path as "./images/ascii_test.tiff" but this also results in break. Where could be the problem that ascii_test.tiff cannot be opened?
Is not the first time I upload this program i know, but the problem now is that i try to export files, because i need to create an excel graph. But when I try to run it, I don't have any result, no file and no result of the program.
Code:
#include<stdio.h>#include <time.h> #include <cstdlib> #include <math.h> int randfun(double arrX[], double arrY[], int size); int cenfun(double arrX[], double arrY[], int size); int rotatefun(double arrX[], double arrY[], int size, double center_x, double center_y, const double angle);
So I've been turning my programs into classes and I run into errors.
So this program is supposed to allow the user to open the file and either read or write to it.
I've omitted the read part from it as I want to attempt that on my own .
I get these compile errors:
fileclass.cpp:13: error: ISO C++ forbids declaration of ‘choice’ with no type fileclass.cpp:21: error: ISO C++ forbids declaration of ‘choice’ with no type fileclass.cpp: In member function ‘int file::choice()’:
I'm trying to move a dictionary into a group of bite-sized files based off of the length of the strings in each file (I'm ignoring strings of length 1 for obvious reasons). Since I don't know what the longest word is (and I'm not going to look for it), and I don't want redundant files, I decided to use a vector of output file streams that I would put all the words into, but I can't get the file to open.
I took a look at it and found the failbit is 1, but the badbit is 0, so apparently it's a logic error on opening the stream [URL] .... I looked online and decided to try using pointers, but that didn't work either, so now I'm asking what the problem might be, because I can't think of any reason why it isn't working.
void createDictionary() { //declare variables string dictionaryName;//name of dictionary file ifstream dictionaryIn;//file of original dictionary vector<shared_ptr<ofstream>> dictionaryOut;//files where dictionary will be put based off of word length string word;//input from the dictionary file vector<int> lengths;//vector containing available lengths and their locations unsigned long long counter = 0;
#include <iostream> using std::cout; using std::endl; int main(int argc, char* argv[])
[Code] ...
The only Problem I have is that I need to know how to open a command window at the folder containing the .exe file(this program), inorder to enter the program name or arguments.
