14. Desktop testing or simulation

• Understanding that the value of variables can change during program execution is not so natural, but it is fundamental when programming

• A program cannot be read as text, but carefully analyzing line by line

• You can practice with pencil, eraser, and paper

Desktop testing or simulation

debt	purchase	Screen
-0-	-100-	600
-100-	-200-
-300-	300
600

14.1. Don’t rush desktop testing

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