Redundant code

In computer programming, redundant code is source code or compiled code in a computer program that is unnecessary, such as: In computer programming, redundant code is source code or compiled code in a computer program that is unnecessary, such as: A NOP instruction might be considered to be redundant code that has been explicitly inserted to pad out the instruction stream or introduce a time delay, for example to create a timing loop by 'wasting time'. Identifiers that are declared, but never referenced, are termed redundant declarations. The second iX*2 expression is redundant code and can be replaced by a reference to the variable iY. Alternatively, the definition int iY = iX*2 can instead be removed.