Author: Poschmann
Date: 23:06:33 10/20/99
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There are different point of views: 1. At the level of a single source program line there is no difference between C and C++. If You use a C- and a C++ compiler from the same customer (Borland, Microsoft) both produce the same or nearly the same assembler output. You can simply proof that: If You rename your source files from ".c" to ".cpp" for example the Borland development suite uses the C++ compiler instead of the C compiler. You can take a look at the assembler output or simply measure the program speed (nps). 2. Distributing Your existing code to some C++ classes will result in a sligthly slower program because of some overhead by C++. 3. C++ programs of larger projects (about 100000 code lines or more) are faster then there C equivalents. It is due to the fact, that You can easier translate Your problem into a good program design. The performance in a chess engine is determined by a few algorithms of some thousand program lines. The focus lies at the algorithms and the relationships between them are very clear. You cannot improve them by C++. 4. If You write an user interface, selecting C++ is a good choice. Most of the commonly used libraries (MFC from Microsoft, OWL or VCL from Borland) are C++ class libraries, which can easily used an modified. If you have programmed in C since many years, You need possibly one or two years to be a good C++ programmer. "Thinking" in C++ is completely different from the same in C regardless many joint syntax. Ralf
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