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C Language > Learn C Language > Why do we use # in C programming?
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Why do we use # in C programming?

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In C programming, the "#" symbol is used in preprocessor directives to indicate a command or action that should be performed before the compilation process. For example, "#include" is used to include header files, "#define" is used to define macros, and "#ifdef" is used for conditional compilation. These...
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In C programming, the "#" symbol is used in preprocessor directives to indicate a command or action that should be performed before the compilation process. For example, "#include" is used to include header files, "#define" is used to define macros, and "#ifdef" is used for conditional compilation. These directives help in manipulating the source code before it's compiled. read less
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To generally include header files or macros
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In C programming the # is used to indicate that a preprocessor directive. Preprocessor directives are lines of code that are executed by a preprocessor program before the actual compilation of the code begins. These directives begin with the # and are followed by a preprocessor command.
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to import the preprocessor directives( user defined or predefined header files like stdio.h, conio.h etc)
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