RosettaCodeData/Task/Subleq/FreeBASIC/subleq.basic

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Dim As Integer memoria(255), contador = 0
Dim As String codigo, caracter
Input "SUBLEQ> ", codigo
While Instr(codigo, " ")
memoria(contador) = Val(Left(codigo, Instr(codigo, " ") - 1))
codigo = Mid(codigo, Instr(codigo, " ") + 1)
contador += 1
Wend
memoria(contador) = Val(codigo)
contador = 0
Do
Dim As Integer a = memoria(contador)
Dim As Integer b = memoria(contador + 1)
Dim As Integer c = memoria(contador + 2)
contador += 3
If a = -1 Then
Input "SUBLEQ> ", caracter
memoria(b) = Asc(caracter)
Else
If b = -1 Then
Print Chr(memoria(a));
Else
memoria(b) -= memoria(a)
If memoria(b) <= 0 Then contador = c
End If
End If
Loop Until contador < 0
Sleep