A multilevel programming paradigm

A multilevel programming paradigm that resembles a hardware design process is developed. This paradigm provides software architectural support for software reuse and is based on the functional programming language FP, object-oriented programming, and conventional programming. There are three levels-function level, object level, and procedure level. Ideas and concepts are adopted and modified to blend the three levels. The algebra of programs can be used to provide the underlying mathematical foundation for the function and object levels, and the in-situ evaluation semantics is used to define the semantics of the procedure level. The concept of signature is used as a tool to provide a window to look into the object and to specify interfaces. The user of a class needs to know only the signature. Adoption for reuse becomes easy in this paradigm because interface classes can be constructed. There is only one data type-the FP object, which provides a standard data format