Strange behaviour of TApplication

ROOT
1

Hi
I don’t understand the result of this short program:

#include <TApplication.h>
#include <iostream>
using namespace std;

int main(int argc, char** argv)
{
	system("pwd");
	string DirName=argv[1];
	TApplication theApp("App", &argc, argv);
	system("pwd");
}

if the first argument given is a existing directory (let say given_real_path )then the result of the program is :
current_path
given_real_path

if it is not a real path, the result is:
current_path
current_path

Why such a strange behaviour? how avoid the “cd” command in the first case?
Thanks for your help
Olivier
(I am using last root version, and either gcc 3.2.3 or gcc 3.4.4)

2

Hi Olivier,

see “root -h”. You could simply set argc=1 when initializing your TApplication object.

Axel.

3

Thanks very much. I didn’t know this feature of TApplication.
Olivier