Author: Vincent Diepeveen
Date: 17:23:50 08/16/00
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On August 16, 2000 at 19:41:46, Dann Corbit wrote: >On August 16, 2000 at 18:56:15, Tom Kerrigan wrote: > >>C++ is a superset of C. > >This is largely true, but there are enough exceptions to make a remark. > >There are a very large number of legal C programs which cannot be compiled as >C++. There are C and C++ programs which will operate differently, depending >upon whether you are compiling as C or C++. Trivial examples: Those examples are not real true. They form the difference between an OOP language and an imperative language. Therefore the difference is logical. The core of a chess program however compiles perfectly fine. In fact what i did to the auto232 player as patched by Remi Coulon, i renamed a few 'cout' commands to printt, renamed the c++ file to c and it worked at once. If you have an interface that's doing all kind of things like putting multiple boards on the screen, then if you write a very neat way of C, like nice modules, it's no problem to do this in C. If you write in C++ then with less experience it's easy to make objects that show multiple boards. Personally the only 2 big advantages of c++ which i miss a bit in C are - call by reference is real cool - data-hiding if programs get bigger that really is cool, especially the first few years i programmed in C i suffered from this. What i dislike of C++ - you need to write hell of a lot more code to do the same, now hopefully that's because i'm bad in C++. - a simplistic c++ program where you use a few of the c++ features compiles to incredible sizes, and it's dead slow. For example i planned to write the datastructure in the diep-win32 interface in c++, so that the gamedatabase could use a nice OOP methods, but after a bit of testing it appeared that using nice c++ it would get incredible slow. Now i program it in C, and after some toying with a lot of typedefs and structures i really like that way more now. Personally i don't see however why someone who starts to program now, would NOT start with C++. As you learn a) c++ very good b) you learn tricks to prevent the above slowness of c++ to happen if you need it. So personally i would advice to start with C++ directly. C is for dinosaurs from the previous century, who were born before or short after 1970. >/* Perfectly legal C, but not legal C++ */ >/* Hint: just changing the variable names to non C++ keywords is not enough to >fix this program to make it legal C++ */ >#include <stdlib.h> >int main(void) >{ > int *new = malloc(5); > int delete = 0; > return delete; >} > >/* Legal in C and C++, but answers are different: */ >#include <stdio.h> >int main(void) >{ >printf("sizeof the letter 'a' is %d\n", sizeof('a')); >return 0; >} > >>You will be able to write your chess program in C, compile it with a C++ >>compiler, and get exactly the same performance. >> >>If you use C++ features, your performance will decrease depending on which >>features you use and how often you use them. The performance hit can range from >>trivial to extreme. >> >>In my opinion, the goal of OOP is to organize and simplify complicated things. I >>don't think a chess program is so complicated that it can benefit from OOP. > >I do agree with your general premise.
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