Is one or more than one code statements which are either never executed or unreachable?

Dead code is one or more than one code statements, which are: Either never executed or unreachable, Or if executed, their output is never used.

What does it mean when code is unreachable?

In computer programming, unreachable code is part of the source code of a program which can never be executed because there exists no control flow path to the code from the rest of the program.

Which tool should be used to detect unreachable code?

GNATprove detects and issues warnings about both the dead code and the unreachable code.

What is logically dead code?

Logically dead code are branches of software that cannot be reached given the logical conditions. Finding logically dead code is important because it can indicate the software was not written as originally intended. So simply, a code change made the branch no longer necessary.

What is meant by dead code elimination?

Dead Code Elimination is an optimization that removes code which does not affect the program results. You might wonder why someone would write this type of source code, but it can easily creep into large, long-lived programs even at the source code level.