UNIX/Linux Programming - C++ Forum

hello i am getting an error while running the festival in my system as "linux: can,t open /dev/dsp" i was googling for this error in internet ...

[1 reply] : It most likely has to do with permissions on the file. Typically only ... (by ostar2)

by kszewczyk

X11 error debuging

Hello everyone, I have trouble with debugging X11 Server Errors for example: X Error: BadMatch (invalid parameter attributes) 8 Major opcode: 2 (X_Cha...

[no replies]

by closed account S3TkoG1T

exit(1) not working on unix

Hello! So I am trying to use exit(1) but every time I compile it through g++ I get an error that exit(1) "wasn't declared in the scope". Help me understand w...

[5 replies] Last: Ah, yeah. In MSVC they're not even in the std namespace despite having... (by LB)

by robotarduino

Read a CSV File from a Flash drive (Using C++, Ubuntu 12.04)

I want to read a file from my flash drive called text.csv. However, I cannot even open the port where my flash drive is connected. This is the code that I am us...

[2 replies] Last: "/dev/sda/", "/dev/sdb" and so on are raw devices. They never denote a... (by tcs)

by reb110

Getting the following errors in my program

/var/tmp//ccI1DooE.o(.text+0x102): In function `main': : undefined reference to `copy_argv' /var/tmp//ccI1DooE.o(.text+0x144): In function `main': : undefine...

[1 reply] : You didn't link against a library containing the reported missing symb... (by tcs)

by linc555

Click listener

Hello, I would like advice on how to modify this code, so that the resulting program counted pressing the mouse on the background . When I run the program, the...

[no replies]

by nido125

Serial file transfer protocol

Hello ppl, I'm working on a windows program simulating an existing Unix program, the program is a firmware downloader, it sends a binary firmware file through...

[no replies]

by vsselvaraj

Best Compression technique

Hi all, I am working on a sample backup code, where i read the files per 7200 bytes and send it to server. Before sending to server, i compress each 7200 byt...

[3 replies] Last: Why do you need to compress the data you are sending to the server? H... (by ajh32)

by laracho

how does the loop works

especially the the loop part void encode (char *cat) { char orig = "abcdefghijklmnopqrstuvwxyz"; char cipher = "bpduhijkaltxwmrzfoysvngeqc"; char *copy; ...

[1 reply] : What exactly you want to understand? is there some problem with the co... (by writetonsharma)

by vincegata

Why address of an object is 6 bytes?

Hello, A simple code: int i12 = 1001; cout << i12 << " " << &i12 << endl; result: 0x7fff0d065098 It's 6 bytes, but my machine is 64 b...

[13 replies] Last: Thank you for all responses, I am going to close this. (by vincegata)

by lacikes

handle multipleclient Server using fork

Hello, I have a course that is Operational Systems.. My lecturer doesnt explain so much and after He say, You must solve this problem, because u r a programmer....

[1 reply] : Sorry, but I didn't really understand your question. But after a short... (by tcs)

by miamidawgs

Error with compiling program with fuctions.

i am writing a code, but i am having some problems with a fuction. this is the fuction: void printWattsGenerated( double watts ) { if( watts < 100...

[8 replies] Last: It just compiled. thanks for all the help (by miamidawgs)

by papires

Get information about system?

Hi, I need get information about operation system, how memory, cpu and disk. But, I don't find any lib that to do it. So, I cretate a simple program to ex...

[2 replies] Last: /proc is where that stuff is (by closed account Dy7SLyTq)

by reaper685

Q-Guidance Algorithm

Hello, this is my first post on this forum. Does anyone know of a way to implement the Q-guidance algorithm in C++? http://en.wikipedia.org/wiki/Q-guidance I...

[no replies]

by Kan Abu

Soduku code

try12.cpp: In function âvoid interact(Board&)â: try12.cpp:211: error: ânewBoardâ was not declared in this scope try12.cpp: In function âvoid displayBoard...

[1 reply] : ¿do you know what `newBoard' is? the compiler does not. Also, ¿â? (by ne555)

by Akshayanti

Need help with some time freeze kind of problem

Hello! I was writing a basic program and was wondering about this problem when i give exit(0); the compiler exits as soon as that part of code is reached. Is...

[2 replies] Last: sleep (by closed account Dy7SLyTq)

by gautamreloaded

Problem in C (1,2)

when I put #include<stdio> as header file in my program then it show error that there is no such file exist Can any one fix this problem ???

[21 replies] Last: If you are still experiencing errors when you compile. Go to the termi... (by Smac89)

by hungduongn

How to make program run by command on terminal

Hi. I try to write a program that take a file name as an argument, and return the number of lines. Command should like: count filename.txt, just like g++ filen...

[5 replies] Last: What's so bad with ./ ? :-O (by closed account D4S8vCM9)

by Walley

having problem while copieing function returned char array to a char array using strcpy

char *getIcType(Ic ic){ static char icType ; switch(ic.type){ //some code } return(icType); } In main { char icType ; //som...

[no replies]

by grandmastermoo

2 dimensional arrays

I am making a primitive terrain manager program using a 2 dimensional array. Im stuck on these parts of the program. Any help would be appreciated Thank you! ...

[1 reply] : Sounds like you need to write a class that will handle your plot of la... (by ajh32)

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UNIX/Linux Programming - March 2013