Question

how data flow testing aids in identifying defects in variable declaration and its use​

Answer 1

Answer:

Data Flow Testing uses the control flow graph to find the situations that can interrupt the flow of the program. Reference or define anomalies in the flow of the data are detected at the time of associations between values and variables. These anomalies are: ... A variable is defined twice before it is used.

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Answer 2

Answer:

Data Flow Testing uses the control flow graph to find the situations that can interrupt the flow of the program. Reference or define anomalies in the flow of the data are detected at the time of associations between values and variables. These anomalies are: ... A variable is defined twice before it is used.