WHERE IS gtk/gtk.h

[Maya <escalante canada com>]

Using ANJUTA and the prompt, I am trying to compile the folowing 
program:
#include <gtk/gtk.h>
int main()
{
        return(0);
}
But buth give me an error saying that the "gtk/gtk.h" file could not be 
found?

I have tried doing some modifications on './profile', but to no avail.
Hoping that someone here will be able to tell me what I am doing wrong 
I have attached the './profile'. Please do have a look at it and tell 
me what am doing wrong.
TIA

Attachment: profile
Description: Binary data