hi people
can i use linux shell command into C++ programs ?
To copy files from place to other.. using "cp ¨ command ..

thanks

system ( "command" )

hmm... that has never worked for me, i think the system command might be a windows/dos thing

i get errors like
test.cpp:4: implicit declaration of function `int system(...)'

Well did you pass a string to it? That could be why. Also you are probably compiling with gcc and not g++ since i think only C allows you to implicitly declare functions.

Erm

is a standard library function that's available under both C and C++. It's declared in <stdio.h> and corresponding C++'s <cstdlib>.

it works for me when i #include <iostream>

FFS, how many time do I have to say it. <_<

Anyway, the reason is, the library implementation you're using happens to include <cstdlib> indirectly when you include <iostream>. This is fine. However, there is absolutly no guarantee that this is the case. A library implementation doesn't have to implement it that way. A new version of that library could do it differently, a different library implementation could do it differently. Just don't assume it does get included. If you want to use a function declare in a particular library header, include that library header.

Also please note that it is very bad practice to use commands in programs like that.
You force the user to have that specific command.

It is always better and faster to use native C++ functions

I had that same thing with removing a dir, at first I was thinking of using system("rm -R ...")
but there is an rmdir() function wich I found later.

to copy a file its even easier, use an ifstream and ofstream :)

also check out the GNU C library for more linux specific functions


If you really still want to use OS-specific commands, i suggest shellscripting

in windows:

yeah, ok, i mainly use them in progs just working on my comp so that i know that i have the command.