I've recently started to program and i tried making a guess my number game...
the code is very deorganized but it worked with easy dificulty, when i upgraded the game so it could have normal and hard nothing succeded.
adn i'm getting a litle frustrated so i'll post the code to see if anyone could help me find my error.
don't mind the text they are in portuguese my mother tongue.
Define LibPub gan()=
Prgm
:Lbl z
:e:=0
:If e=e Then
:RequestStr "Facil=F Normal=N Dificil=D",a,0
:If a="F" Then
:Goto v
:ElseIf a="f" Then
:Goto v
:elseIf a="D" Then
:Goto l
:ElseIf a="d" Then
:Goto l
:elseIf a="N" Then
:Goto q
:ElseIf a="n" Then
:Goto q
:Lbl q
:b:=randInt(0,100)
:Lbl u
:Request "Adivinha o numero de 0-100",c,0
:If c=b Then
:Disp "Bom jogo acabaste em ",e," tentativas!"
:Lbl t
:RequestStr "Novo jogo? S\N?",d,0
:If d="S" Then
:e:=0
:Goto z
:ElseIf d="s" Then
:e:=0
:Goto z
:ElseIf d="N" Then
:Goto y
:ElseIf d="n" Then
:Goto y
:Else
:Goto t
:EndIf
:ElseIf c>b and c<101 Then
:Text "Muito alto!",0
:e:=e+1
:Goto u
:ElseIf c<b and c>−1 Then
:Text "Muito baixo!",0
:e:=e+1
:Goto u
:Else
:Text "É só de 0 a 100!"
:Goto u
:Lbl l
:b:=randInt(0,1000)
:Lbl m
:Request "Adivinha o numero de 0-1000",c,0
:If c=b Then
:Disp "Bom jogo acabaste em ",e," tentativas!"
:Lbl n
:RequestStr "Novo jogo? S\N?",d,0
:If d="S" Then
:e:=0
:Goto z
:ElseIf d="s" Then
:e:=0
:Goto z
:ElseIf d="N" Then
:Goto y
:ElseIf d="n" Then
:Goto y
:Else
:Goto n
:EndIf
:ElseIf c>b and c<1001 Then
:Text "Muito alto!",0
:e:=e+1
:Goto m
:ElseIf c<b and c>−1 Then
:Text "Muito baixo!",0
:e:=e+1
:Goto m
:Else
:Text "É só de 0 a 1000!"
:Goto m
:Lbl v
:b:=randInt(0,10)
:Lbl w
:Request "Adivinha o numero de 0-10",c,0
:If c=b Then
:Disp "Bom jogo acabaste em ",e," tentativas!"
:Lbl x
:RequestStr "Novo jogo? S\N?",d,0
:If d="S" Then
:e:=0
:Goto z
:ElseIf d="s" Then
:e:=0
:Goto z
:ElseIf d="N" Then
:Goto y
:ElseIf d="n" Then
:Goto y
:Else
:Goto x
:EndIf
:ElseIf c>b and c<11 Then
:Text "Muito alto!",0
:e:=e+1
:Goto w
:ElseIf c<b and c>−1 Then
:Text "Muito baixo!",0
:e:=e+1
:Goto w
:Else
:Text "É só de 0 a 10!"
:Goto w
:endif
:endif
:endif
:endif
:endif
:Lbl y
:EndPrgm

I'm portuguese and i'll deal with that problem a litle later now i have to go to school.

EDIT: i came back already and for some reason the code was not running in my calc , when i pasted it into my computer it worked in students software.
Added the option "exit" in the middle of the game like Rhombicuboctahedron suggested then i decided to try it in my calc with that little improvement to see if it worked since it didn't make any sense not to, and guess what it did work.

Now can anyone explain me why it was not working?

thanks.
I using os version 3.1.0.392 with Ndless installed latest version.

Students software is the latest, and i always work on the calc.No matter what it got fixed and the problem is not there to annoy me. And i couldn't use a letter as you suggested because the request asks for an integer so a string won't work, so i used a number that does not bother the game.