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What about the pointer in neural network C language
2022-07-07 16:01:00 【Yangyang 2013 haha】
neural network c What's the matter with pointers in language? The role of preprocessor Interview questions : Preprocessor identification #error What is the purpose ? answer :error The order is C/C++ One of the preprocessing commands of language , When the preprocessor preprocesses to #error Command will stop compiling and output user-defined error messages . In fact, most of them # The first macro definitions are preprocessors , Not only #error, There are also common #include,#ifdef.#else.#endif. Maybe you need to write a headline !
neural network c What's the matter with pointers in language :
Write a " standard " macro MIN , This macro takes two arguments and returns the smaller one Interview questions : Write a ” standard " macro MIN , This macro enters two parameters and returns the smaller answer : This test is designed for the following purposes :1) identification #define The basic knowledge of application in macros is good ! This operator exists C The reason in the language is that it enables the compiler to produce a ratio of if-then-else Better code , It's important to understand this usage .3) Know how to use parameters carefully in macros !
The role of the preprocessor Interview questions : Preprocessor identification #error What is the purpose ? answer :error The order is C/C++ One of the preprocessing commands of language , When the preprocessor preprocesses to #error Command will stop compiling and output ?C++ Inherited C A very sophisticated processor , The process of compiling the system compiler is preprocessing 、 compile 、 link . The preprocessor processes the program according to the preprocessing instructions before the program source file is compiled ?
Write a " standard " macro MIN , This macro takes two arguments and returns the smaller one This operator exists C The reason in the language is that it enables the compiler to produce a ratio of if-then-else Better code , It's important to understand this usage .3) Know how to carefully enclose parameters in macros . This is just a preliminary test in the interview , In fact, the macro definition in the project can bring very good effects , In particular, the macro definition can be used as a switch , Distinguish between versions , Finish debugging and optimization .
say c++ Four of them cast transformation Type conversion is often used in projects A grammatical rule , Almost every programming language is inevitable In this regard , Understand dynamic Type conversion can be fast Solve some thorny problem , And burst out unexpectedly effect . Of course, it is also a slightly higher frequency in the interview topic of conversation . Especially in C++ among , Object oriented is the biggest It is characterized by polymorphism , And be good Use this and ?
say c++ Four of them cast transformation Type conversion is often used in projects A grammatical rule , Almost every programming language is inevitable In this regard , Understand dynamic Type conversion can be fast Solve some thorny problem , And burst out unexpectedly effect . Of course, it is also a slightly higher frequency in the interview topic of conversation . Especially in C++ among , Object oriented is the biggest It is characterized by polymorphism , And be good Use this little haired cat .
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