Compilare: Free Pascal Compiler version 3.2.0+dfsg-12 [2021/01/25] for x86_64 Copyright (c) 1993-2020 by Florian Klaempfl and others Target OS: Linux for x86-64 Compiling main.fpc main.fpc(11,7) Note: Local variable "s" is assigned but never used main.fpc(35,82) Warning: Variable "u" does not seem to be initialized Linking main 40 lines compiled, 0.3 sec 1 warning(s) issued 1 note(s) issued