I'm trying to call another c program via shell script in c, but it just pop-up and close again.. here's my code:
char* command = "";
char temp[MAX_LENGTH] = "";
sprintf(temp, "gnome-terminal -e 'bash -c "./Isopropyl %s"'", editor -> filename);
command = malloc(strlen(temp) + 1);
if(command == NULL)
return;
strcpy(command, temp);
system(command);
How to compile and run program from DOS shell. Any list of procedures....
View 1 Replies View RelatedI want to take the standard output of a shell command (in Red Hat, using tcsh, in my case) and redirect it into my program for processing.
(Then ideally I would love to take the output of my program and redirect it to yet another command, but this is a second issue.) Simple example: I naively thought this might work:
I want to type this on the shell:
Code: $ echo Harry > hello and I was expecting this output on my terminal:
Code: $ hello, Harry And this would be my simple hello program:
Code: #include <iostream>
#include <string>
int main() {
std::string usrInput;
std::cin >> usrInput;
std::cout << "hello, " << usrInput << std::endl;
return 0;
}
This is what so far i did
Code:
#include <stdio.h>#include <string.h>
#include <ctype.h>
#include <bsd/string.h>
int
main(void)
[Code] ....
How to do this Using the fork(), execvp() and waitpid() system calls, launches the requested program and waits until the program has finished.
Simple c shell I have been writing. The problem I am having is to do with my argument passing. I have written a simple state machine to parse commands given by the user into an appropriate array of character pointers for use with the function execvp().
My experience with c coding is limited, I think I'm getting confused with pointer manipulation and stack memory. I am trying to store the 'tokens' within my struct->argv[].
Add the ability to handle program names and parameters that contain white space: everything in between two double quote (") characters needs to be treated as one word! E.g. "./hello world" should be treated as the name of one program called hello world (in the current directory, with a space in the middle of the file name) rather than a program called hello with one parameter world.
Here is my parsing functionality.
struct Command {
char *name;
int argc;
char *argv[MAX_ARGS];
};
struct Command command;
void createToken(char *start, char *end)
[Code] .....
#include <iostream>
using namespace std;
class CD {
public:
static const int num = 100;
char publisher[num], title[num], location[num];
[Code] .....
I have created a Namespace Extension (I hope so) by creating a ATL Project with MFC support as dll in Visual Studio 2010.
Now I have a Implementation of IShellFolder:
Code:
// ILCShellFolder.h: Deklaration von CILCShellFolder
#pragma once
#include "resource.h" // Hauptsymbole
#include "NewNSE_i.h"
#if defined(_WIN32_WCE) && !defined(_CE_DCOM) && !defined(_CE_ALLOW_SINGLE_THREADED_OBJECTS_IN_MTA)
[Code] ....
Not any of those IShellFolder Methods is being called... When I attach the explorer.exe process (which I know I can use to debug on other projects, just in case to exclude errors) it tells me that the DLL is not loaded by the explorer.exe process.
So I know that I can call a program by system("prog.exe"), but what do I add in when I want to pass a parameter?
View 2 Replies View RelatedMy program is crashing when I'm trying to call b = a. What has me confused is that when I call c = d = b, it all works fine.
I actually think I see it now that I posted this. In operator= I'm changing the size, but I'm not changing the size of the array that it's pointing to correct? I'm keeping it as 'p = new T[size]' rather than changing it to 'p = new T[x.size]' correct?
#include <iostream>
#include "Array.h
int main() {
std::cout << "creating Array< int > object a ...
[code]....
I will sketch the scenario I would like to get working below. I have one main application.
That application, based on user interactions, can load other applications in a secure shell. This means these child applications cannot interact with the OS anymore, nor with each other.
The parent program can at any time call functions of these child programs.
The child program can at any time call functions of these parent programs.
How to implement this in C++? Preferably both parent and child should be written in C++.
The performance of loading the child applications doesn't matter. The only thing that matters is the performance of the communication between child and parent.
Ok I'm on a Windows machine and I'm writing a simple tool to dump and touch ttf files. It's almost done except that the command line parser is giving nightmares. how do I stop the shell from automatically converting wildcards in arguments to directory listings? (I first flatten all arguments to a single string before parsing)
View 7 Replies View RelatedI am trying to call an external application in my C++ program , example, system("C:Program FilesInternet Exploreriexplore.exe"); but the application just gets closed.
1. double slashes need to be used.
2. the command that worked for me was "ShellExecuteEx"
how to invoke a UNIX command within a program
I found this:
dd if=/dev/urandom of=myrandom bs=100 count=1
and I found this:
dd if=/dev/zero of=mytestfile.out bs=1 count=0 seek=1G
I want to call this command, by using the command line and typing Generate or something to that effect.
Basically, I want to be able to build random size files, content isn't important to me at this time.
i have this program I am working on and it seems to crash after the function call getdata()
here is the code
#include<iostream>
#include<string>
#include<cstdlib>
[Code].....
I know there has to be a system call to pause (not system("pause") execution of a program for a few seconds. I would like to give the illusion that my program is 'thinking' rather than just spit out the result as soon as the user has hit the enter key.
View 5 Replies View RelatedI have written a program which uses a pid to check if the process is currently running and return a value based on the system call result.But the program core dumps
Code:
#include <stdio.h>
#include <string.h
int main( argc, argv )
int argc;
char * argv[];
{
int p_pid = 99;
char buff[1000];
}
[code]....
What is the mistake in this code and is it portable in both unix/linux , is the method secure (grepping for program name )?
I want this programming to call functions choose between a customer type and call the relevent function to calculate the final price but it is not calling the functions.
#include <iostream>
using namespace std;
double amount;
double studendOrPensioner(int&choice, double &origPrice);
double OtherCustomers(int&choice,double& origPrice);
[Code]...
I have a program which call only one time malloc at the start of the program. When running, I see with 'process-explorer.exe' that memory is growing in little steps. Is this normal? why?
Using Windows 7
I was given a task to convert infix to post fix using both linked lists and stacks in the code so this is what i have written but the problem is it is giving me same error at three different places "missing function header(old style format?)
#include <iostream>
#include <string>
using namespace std;
const int size = 100;
class stack{
private: // Declare a structure for the list
[Code] ....
What is Function call Overhead and Function Call Stack?
View 2 Replies View Relatedso here is a basic program i wrote i am thinking of writing a currency conversion program that does multiple conversions and i was thinking it is possible to do something like this couldnt i call them after i write them as functions
usdtoeuro()
usdtokuna()
how would i go about doing that? or can you point me to anything?
Code:
#include <stdio.h>
int main()
{
[Code].....
I have decalred a password function which accepts an array as parameter but while compiling, it's showing an error wherever I have called it.
void password(char a[100])
{
if(::q==1) { cout<<"
Enter the master password : "; goto ENTER; }
[Code]....
Wherever I have called this function it's showing an error: "Call of nonfunction." One of the examples of the errors is below:
::q=1;
password(master_password);
//Both 'q' and 'master_password' being global variables, and master_password being array of size 25.
I wrote a program which detects a pattern in an array then returns a valve (x) for each time it does. now i tried to call function patt in main so that i can print x but it doesn't let me do it.
#include <stdio.h>
int patt(const int SIZE, char str[], int i, int c);
int main(void) {
const int SIZE=21;
char str[SIZE]={'1', '0', '1', '1', '0', '0', '1', '0', '1', '0', '1', '0', '0', '0', '1', '0', '1', '1', '0', '1'};
int i, c=0;
[code].....
what is the call by value in function??
View 1 Replies View RelatedThis is the error I keep getting, but I'm not sure how to resolve it.
assignment7.cpp:11: error: no matching function for call to 'Time::display() '
Time.h:18: note: candidates are: void Time::display(int, int)
Code:
#include "Time.h"
int main() {
Time tm;
tm.set(12,53);
dt.display(); //Should display 7/4/1776
[Code] .....
I want to write a function and be able to call it during execution (say during a while(1) loop). Is this possible without having to parse an input string to extract the function and parameters I need or is that the only way?
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