Exam CTAL-TTA Topic 1 Question 87 Discussion

Actual exam question for ISTQB's CTAL-TTA exam
Question #: 87
Topic #: 1
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?

Suggested Answer: B Vote an answer

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 Bernie at Nov 07, 2025, 12:47 AM

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