C :: Language Program Environment Does Nothing To Prevent Buffer Overflows
Sep 25, 2013TheC language program environment does nothing to prevent buffer overflows ..... is there any pros to the obvious cons of this?
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C :: Program To Recognize Pattern Of Signals (linux Environment)
Mar 6, 2015I need to write a c program that can receive signals and recognize a certain pattern (SIGUSR1, SIGUSR2, SIGUSR1, SIGUSR2). once the pattern is caught the program terminates itself.
I am able to send the signals to the program from a different process, but I am unsure on how to get the signal handler to recognize the pattern. here is what i have so far:
Code:
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
sig_atomic_t sigusr1_count = 0;
sig_atomic_t sigusr2_count = 0;
[Code] .....
I just need getting the program to be able to catch that specific pattern.
C :: How To Program A Virus With Language
Oct 3, 2013i'm student in computing science , i want to specialize in IT security and the first step i think is to know how to program a virus and understand how it works and how to stop it now i'm just a beginner I look for a way forward , i need some tips where can i begin? What are the basics of IT security? What programming language should I learn?
View 3 Replies View RelatedC++ :: Will Overflows Loop Back Around And Become Positive Again?
Apr 24, 2012If I have a positive double and cast it to an int. If it overflows, I know that most of the time, the value of the int becomes negative. If it overflows far enough, will it eventually become positive again?
Code:
double d = 34192384732194872394837249832743984738.;
int i = (int)d;
std::cout << i << std::endl;
Is there any value of d > INT_MAX that will cause i to be positive?
C++ :: Program Breaks If Copy Stuff With Multiple Lines Into Console - Clearing Input Buffer
Apr 16, 2014Using cin.sync() works great so far, but my program still breaks if you copy something with multiple lines into the console.
string test = "";
while(true) {
cin.sync();
getline(cin, test );
cout << endl << "test: " << test << endl;
}
However, if you were to copy this:
1
2
3
and paste it into the program, the output would be1
2
3
test: 1
test: 2
And if you press enter one more time:1
2
3
test: 1
test: 2
test: 3
The 3 finally pops out.
C++ :: Debug Multithreaded Application In Unix Environment?
Mar 3, 2013How can we debug the multithreaded application in unix environment?
View 1 Replies View RelatedC++ :: Handle Exception In Multi-threaded Environment
Oct 24, 2014Here is the code,
Code:
void foo() {
Acquiring lock
do something...
Func();
Releasing Lock
}
If the function Func throws an exception, there is potential deadlock issue. Then I handle exception like this,
Code:
void foo() {
Acquiring lock
do something...
try{
Func();
[Code] ....
Is this a good practice? I wonder how I can apply RAII in handling exception here.
Visual C++ :: Floating CDialogbar On Multiple Screen Environment
Jul 11, 2014I have an problem with a CDialogbar if my app runs on a system with two screens (side by side). I can not resize it while the CDialogbar is in floating state on the second screen.
I figured out that the problem is the mfc-function CDockContext::Stretch().
It limits the CDialogbar to the primary screen (using ::GetDesktopWindow() to verify the position).
What can I do?
Visual C++ :: Dragging And Dropping Functionality In Windows 8 Environment
Jul 14, 2014i have developed an application in which i have icons in left side pane of application which can be dragged and dropped in client screen. Application is working fine with all the resolution except 1920x1080.
when setting the resolution to 1920x1080 while dragging icons to client area, icon is not attach to mouse pointer. instead there is a gap between the mouse pointer and the icon. i wrote code to identify the screen resolution but it does not seem to recognize 1920x1080 resolution. below code is giving incorrect resolution for 1920x1080 setting.
RECT actualDesktop;
GetClientRect(GetDesktopWindow(),&actualDesktop);
value of 'actualDesktop' variable is {top=0 bottom=783 left=0 right=1536} which is incorrect. according to current resolution size value should be {top=0 bottom=1080 left=0 right=1920}. Due to this, all the icons while dragging are adjusting according to incorrect resolution setting.
how to identify the issue and if there is any limitation with respect to screen resolution in VC++ 6.0 with windows 8 environment.
I am getting same issue when compiling in VS2012 in windows 8. Code does not seem to recognize 1920x1080 resolution setting and downgrading my application look and feel by setting it to lower resolution.
Visual C++ :: Static Class Member In Multithreaded Environment
Nov 21, 2014I have a class having static member.I have get and set methods which will Get and Set Values to this variable. In a multithreaded application does it have any thread safety issues.
Class a {
static int b;
void Set (int c);
int Get();
};
C :: Language Syntax Checking
Jun 15, 2013Q. In context of C language syntax checking, which of the following can be modeled using Finite Automata?
(A) Detecting proper termination of an instruction.
(B) Detecting balance of parentheses.
(C) Detecting initialization of a variable.
(D) None of the above.
C :: USB To Serial Communication Using Language
Dec 18, 2013I have to communicate between two laptops using USB-to-Serial adapter. I have written 2 programs one for sending and another for receiving. Programs were written in both C and C# programming languages.
Using C language: I am able to successfully communicate using C-Programs mentioned below. But the problem is speed. It takes around 1 hour(60min) for just to pass 150MB. improving the performance of this programs...I also mention some comments along with programs for self understanding.Sender File on laptop with serial port :
Code:
#include <stdio.h>
#include <bios.h>
#include <conio.h>
}
[code]....
The above 4 programs behaves as, sender send a character and receives an ack for every character. I have followed this approach, bcoz other approaches were not working fine (in the sense the complete data is not sent, the amount of data sent is not judgeable, bcoz it will different every tym). when i used this approach it worked fine.
C++ :: Compilation In Machine Language
Jan 25, 2013Have a program which given a C source code file, gives back RAW MACHINE CODE, which means it doesn't have to be a executable on his own.
Like:
Given a example function for C:
int stdcall Function(void)
{
return 0;
}
Gives back the Machine Code for the Example Function.
It doesn't need to be actual C code, it can also be like:
type int
return 0
Or also it can be a straight assembly-to-machine-code compiler.
Is there any Library? Or even a external tool I can look into?
C :: Opening Audio File Using Language
Sep 6, 2013how to open an audio file using c. write a code to open an audio file.
View 2 Replies View RelatedC :: Convert Decimal To Binary On Language
Nov 15, 2013The goal of my program is to convert a decmial number to a binary number.First, the program gets an input to an array of chars, and the function translate_dec_bin converts this array to a decimal number through the strtoul function.The problem is that my program prints the binary number with an additional "0".For exmaple, for the input 1 - the program prints 01 instead of 1, for the input 3 - the program prints 011 instead of 11.
Code:
#include <stdio.h>
#include <stdlib.h>
#define MAX_LEN 20
void translate_dec_bin(char s[]){
char st[sizeof(unsigned)*20] = { 0 };
}
[code]....
C++ :: Writing Simple Compiler For A Language
Mar 13, 2014I have a problem about compiler.I want to write a simple compiler for a language.
stm -> id := expr
| print expr
| if expr then stm
| while expr do stm
| begin opt_stmts end
[Code] .....
I guess I should create main.c to convert source code.Also,I should create a source.c to write a example program that is relevant with above grammar.
C/C++ :: Automata - Tell Whether A String Is Accepted By Language
Sep 27, 2014I have a program that reads a text file and then outputs the corresponding transition table according to the regular expression given in the text file. The first line that is read by the code contains the transition table. The subsequent lines of the text files include the strings. I want my code to read the strings in the subsequent lines of the text file and tell me whether the string is accepted or not by the language. Basically, what my code does is that it translates the regular expression to an NFA and then, it translates the NFA to a DFA and then it builds a transition table according to the language.
I have included a special library in my code and I compiled my code from the command line using the following command:
gcc -o lalab lalab.c -lncurses
then, I just run the program like this:
./lalab
Another problem that I have is that my code does not handle the empty transitions, so the program should output a corresponding result when it is fed a regular expression such as a|e. The alphabet of the language is made of {a, b, e} e is the empty transition. The text file that the program reads from includes a regular expression in its first line and strings to be accepted or not in the following lines. Given an input file like this:
(a|b)*a
aaaa
aba
bba
ab
bbb
:frown:
The code should produce an output like this:
yes
yes
yes
yes
no
no
Code:
#include<stdio.h>
#include<conio.h>
#define MAX 20
//=========================================================
struct nfa_state {
int a, b, eps1, eps2;
}NFA[20];
[Code] .....
C/C++ :: Vector Outputs Alien Language?
Oct 19, 2014Program:I have 2 arrays: 1 for the correct answers to a quiz, 1 for the user. I then have a vector to hold the incorrect answers.
It keeps outputting what looks like alt characters, why.
Here is the code:
#include <iostream>
#include <vector>
using namespace std;
int main() {
const char a1[]={'a','d','b','b','c','b','a','b','c','d','a','c','d','b','d','c','c','a','d','b'};
char a2[20];
int i=0;
int incorrect=0;
[code].....
C/C++ :: What Settings Has To Be Made To Run Language In Jgrasp
Nov 25, 2012Running c in jgrasp.. i am getting error has gcc not found.
View 4 Replies View RelatedC :: How To Convert Assembly Language In Txt File To S19 Format
Apr 25, 2013a few pointers in building an assembler in C for a 68hc11 micro controller I'm struggling on a way to convert the assembly language in a txt file to s19 format.
View 1 Replies View RelatedC# :: Way To Build Project To Dynamic Linking Language
Dec 28, 2011I have a project C# and i want to build it to .dll for use in ASP.Net project . Any way to do it. It look like my attachments image .
View 1 Replies View RelatedC++ :: Create Symbol Table For Assembly Language?
Jan 21, 2013how to create a symbol table for an assembly language and high level language program in c++
View 1 Replies View RelatedC++ :: How To Prevent Loop Running Over
Feb 18, 2014i am writing a function that takes a delimited string and splits the strings into it's respective words according to the delimeter.
1) iterate through string and store delimeter position in vector array.
2) iterate through again and use substr to split into words and store again in a vector.
I then have a dictionary file, and am comapring each values in the string with each in the dictionary, problem is that it overruns the loop and obviously gives a subscript out of range error.
Code:
#include <iostream>#include <fstream>
#include <vector>
using namespace std;
//Start with string inputString
//Find delimeters ::pos as ints and stores positions in vector <int> array
//Run though string using 'find' and seperate string by positions of char32s
//Build vector<string> array of individual words in string
//Open dictionary file and loop though testing each words in vector string array against each word in dictionary
[code]....
C :: Prevent Duplication When Insert Age
Oct 17, 2014I created program that insert employes data and then print their data but never accept duplicate age if user entered duplicated age prompt him to enter another age (age must be unique)
Code:
#include<conio.h>
#include<stdio.h>
#define size 3
struct emp
{
int age,overtime,dedcution,netsal;
float salary;
[Code] .....
C :: Prevent To Type Zero As The First Digit In Value
Apr 4, 2013I want to prevent to type zero as the first digit in value in c code
Code:
char next_buffer[ 5 ];
int frame_counter;
int digit_counter;
memset( cmd->next_buffer, 0, sizeof( cmd->next_buffer ) );
cmd->frame_counter = 0;
cmd->digit_counter = 0; Code: if( arg && isdigit( arg[ 0 ] ) {
[Code].....
this write in text box numbers from keypad for example
5 0 2 4 9
After each typed digit, here is a underscore line waiting for the next to type next digit. I want to prevent users to type zero as the first digit in value.
C++ :: Create Symbol Table For High Level Language?
Jan 21, 2013How to create a symbol table for an assembly language and high level language in c++?
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