The expanded code by the preprocessor is then passed on to the compiler. i) extension to the source code file which is initially with (. Hence, the preprocessor expands the source code(adds the required information) and then this expanded source code is passed on to the compiler. Just like the above three, there are many other preprocessors, we will cover them in detail in a separate tutorial. This preprocessor command is used to print the error message. This is used to define a MACRO in the C language. To include a particular header using the name of the header file into the C language program code. Some of the preprocessor directives are as follows: The word after # is called the preprocessor command.
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