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C Language > Learn C Language > What does # mean in C?
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What does # mean in C?

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In the C programming language, the symbol # serves as a preprocessor directive. Preprocessor directives are instructions that are processed before the actual compilation of the code. These directives typically start with # and are used to control various aspects of the compilation process.
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In the C programming language, the symbol#serves as a preprocessor directive.Preprocessor directives are instructions that are processed before the actual compilation of the code.These directives typically start with#and are used to control various aspects of the compilation process. read less
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In C, # is the preprocessor directive symbol. It tells the compiler to process instructions before actual compilation. Common examples: #include – includes header files #define – defines constants or macros #if, #ifdef, #endif – conditional compilation
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In C, # is the preprocessor directive symbol. It tells the compiler to process instructions before actual compilation. Common examples: #include – includes header files #define – defines constants or macros #if, #ifdef, #endif – conditional compilation read less
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# is used for preprocessor directives like #include, #define, which are processed before compilation.
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