[GAP Forum] Help please

[Abdulsatar Al-Juburie]

Dear All, 


I am struggling with the following error:


gap> B:=AutGrpOfPCG([1,2,3,4,5],[[1,2],[1,3],[2,3],[4,5],[3,4]]);
Error, Variable: 'starcomp' must have an assigned value in
  R1 := starcomp( V, E ); called from
<function "AutGrpOfPCG">( <arguments> )
 called from read-eval loop at line 17 of *stdin*
you can 'return;' after assigning a value


**********
My script is:
*************

AutGrpOfPCG:=function(V,E)  # the main program

local R1,starcomp,St;  # Declaration list

Read("d:/runprogram/starcomp.txt"); # reading another function  (starcomp) written in a separate text file

R1:=starcomp(V,E);        # calling the starcomp function

St:=R1[1];
return[St];

end;


The input to the function is:

B:=AutGrpOfPCG([1,2,3,4,5],[[1,2],[1,3],[2,3],[4,5],[3,4]]);



If I remove the "starcomp" from the local declaration list, the code is working but with the following warning message:
    
Syntax error: warning: unbound global variable
R1:=starcomp(V,E);        

Any idea and/or help are more than appreciated


Regards,


Abdulsatar