Structured Programming in Basic Problems

© 1998 by Dr. Thomas W. MacFarland -- All Rights Reserved


     Instructions:   Review the following program and see if you can 
                     predict the outcome by completing a "pencil 
                     trace" of the code.  

                     Program output is provided at the end of this 
                     page.

     Compiler:       The program was prepared using GWBasic, which  
                     requires the use of line numbers.


10 REM This program demonstrates a FOR X = Y TO Z loop
20 REM and STEP.
30 Y = 1
40 Z = 5
50 FOR X = Y TO Z STEP 2
60   X = X + .5
70   PRINT X
80   NEXT X
99 END
10000 REM And the answer is ...
10010 REM  1.5
10020 REM  4

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