Software engineering comprises some processes such as designing, implementing and modifying of code. These processes are done to generate software fast and have a high quality, efficient and maintainable software. In order to perform these processes, invariants can useful and help programmers and testers. Arrays and pointers are frequent data types and are used in program code repeatedly. Because of this conventional use, these two data types can be the reason of fault in some program codes. First and last elements of arrays can confront to fault because of carelessness in using index in loops. Also arrays with the same type mostly have some relations which can be probably faulty. Therefore invariants which can report array and pointer properties are functional. This paper presented some constructive extension to Daikon like tools so that can produce more relevant invariants in the case of array.