[gtkmm] behavior modification of input/output functions

[Florent Teichteil <florent teichteil cert fr>]

Hi,

I have a problem with input/output operations with gtkmm.

I wrote this piece of code in a graphical application using gtkmm 2.2.1
:

double probability;
printf("p = ");
scanf("%lf", &probability);
printf("\np = %lf\n", probability);

1) First test with 3.56 :

p = 3.56
p = 3,000000

2) Second test with 3,56 :

p = 3,56
p = 3,560000

I was very surprised since I should obtain the opposite result.

Indeed, the same piece of code in a console application returns the
opposite results :

1) First test with 3.56 :

p = 3.56
p = 3.560000


2) Second test with 3,56 :

p = 3,56
p = 3,000000

Therefore, I think that gtkmm modifies the behavior of the functions of
<cstdio>. If so, how can I prevent this modification ?

Can someone help me ?

Thanks,

Florent Teichteil.