A collection of program slicing

Program slicing provides a new way to software maintenance, program understanding. It can give the programmer the statements only relevant to the computation of a given function. It can transform a large program into a smaller one. A program slicing respected with a point of interest is not only relevant on the variables which are defined or used by the interesting point, but also relevant on the statements and predicates which are effected by these variables and which are effecting these variables too. In this paper, we elaborate on the program slicing technology research and progress. We introduce the basic concept and the development of program slicing. We introduced several different kinds of program slicing algorithm and these algorithm are improtant to program slicing.