Microsoft Small Basic

Program Listing:
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labeltop:
TextWindow.Write("Please give length of rectangle :")
len = TextWindow.ReadNumber()
TextWindow.Write("Enter a width :")
wid = TextWindow.ReadNumber()

If (len < 0 Or wid < 0) Then
  TextWindow.WriteLine("Error : You need to give both values > 0")
  Goto labeltop
EndIf

For k = 1 To wid

  If ( k=1 Or k=wid) Then
    For s = 1 To len
      TextWindow.Write("*")
    EndFor
  Else
    For a = 1 To len
      If (a =1 Or a = len) Then
        TextWindow.Write("*")
      Else
        TextWindow.Write(" ")
      EndIf

    EndFor
  EndIf
  TextWindow.WriteLine(" ")
EndFor
Goto labeltop
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