ISTQB Exam CTAL-TTA Topic 2 Question 38 Discussion

Actual exam question for ISTQB's CTAL-TTA exam

Question #: 38
Topic #: 2

[All CTAL-TTA Questions]

Below is the pseudo-code for the Win program:

The bingo program contains a data flow anomaly. Which data flow anomaly can be found in this program?

AVariable 'A' is not assigned a value before using it.

BVariable 'D' is defined but subsequently not used.

CThe program does not contain any comments.

DIt is recommended to use a variable instead of the hard-coded print results 'Win' and *Loose'.

Show Suggested Answer

Suggested Answer: B

The pseudo-code provided for the 'Win' program reads in variables A, B, C, and D. However, only variables A, B, and C are used in the conditional statements to determine if the output will be 'Win' or 'Loose'. Variable 'D' is never used after it is read, which is a classic example of a 'defined but not used' data flow anomaly. This means that while there is an instruction to read a value into variable 'D', there is no subsequent use of this variable in the program's logic or output.

by Titus at Jul 11, 2025, 09:41 PM

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