1.1 --- a/actions.h	Thu Feb 07 14:46:27 2008 +0100
     1.2 +++ b/actions.h	Thu Feb 07 16:15:07 2008 +0100
     1.3 @@ -1,8 +1,9 @@
     1.4  
     1.5 -char action(struct Node* node);
     1.6 +unsigned char action(struct Node* node);
     1.7  
     1.8 -char action_print(struct Node* node);
     1.9 -char action_printchar(struct Node* node);
    1.10 -char action_sum(struct Node* node);
    1.11 -char action_number(struct Node* node);
    1.12 +unsigned char action_print(struct Node* node);
    1.13 +unsigned char action_printchar(struct Node* node);
    1.14 +unsigned char action_sum(struct Node* node);
    1.15 +unsigned char action_number(struct Node* node);
    1.16 +unsigned char action_input(struct Node* node);
    1.17