| Summary: | 碩士 === 國立交通大學 === 資訊工程研究所 === 81 === Object-Oriented programming languages consist of four pro-
gramming constructs and mechanisms, namely information
hindding, data abstraction, inheritance, dynamic binding. The
purpose of this study is to analyze the execution
efficiency of Object- Oriented programming constructs and
mechanisms under defferent C++ compilers. We implement
programs using C++ and each of them has one or more property
of the four mechanisms mentioned above. Then we compare them
with those programs that have the same functiona- lity but
are implemented with traditional programming technigue. Since
compilers may produce results of the analysis considerable
differences, six kinds of compilers are used to minimize
the effects from compilers. These compilers are 1) Borland
C++, 2) Zortech C++, 3) MicroSoft C++, 4) SUN gcc version
2.3.3, 5) SUN C++ version 2.1 SC 1.0 and 6) SUN C++ version 2.0
FCS. The first three compilers are for PC environment while the
later three are for workstation. From our study, inheritance
does not affect on the execution efficiency while the other
three machanisms may not always de- crease the execution
efficiency. Further studies indicate that appropriate
compiler optimization will improve the execution efficiency
of these Object-Oriented constructs and mechanisms. Conclusion
from this study favors that Object-Oriented con- structs and
mechanisms implemented based on C++ do not decrease execution
efficiency.Particularly, dynamic binding for some spe- cific
applications could outperform the traditional implementa- tion
technigue both the execution efficiency and flexibility for
implementation.
|
|---|
