Pseudocode
STEP 1:
          Start
STEP 2:
          Enter the value of number (n)
STEP 3:
          For counter = 1 To n
          n=a+b
          a=b
          b=n
Next
Do While (counter < 1)
                                                  Start
          n=a+b
          a=b
          b=n
                                            Input a number
          counter + = 1
          ListBox1.Items.Add(n)
End
                                               n=a+b
STEP 4:                                        a=b
          Display The sequence                 b=n
STEP 5:                                                       a
          Stop                                                    n=a+b
                                                                  a=b
          Stop                                                    b=n
                                              Is counter< 1
                                                                  counter + = 1
                                                                     a
                                                End
STEP 1:
          Start
STEP 2:
          Enter the value of number (n)
STEP 3:
          n=a+b
          a=b
          b=n
Loop
Do Until (counter > 1)
          n=a+b
          a=b
          b=n
          ListBox1.Items.Add(n)
          counter + = 1
Loop
STEP 4:
          Display The sequence
STEP 5:
          Stop
                    Start
               Input a number
                 n=a+b
                 a=b
                 b=n
                                a
           F                        T   n=a+b
                                        a=b
                                        b=n
                Is counter> 1
Sequence                                counter + = 1
End                                        a