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Tutorial Basic Detail
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Category: C and C++/General Development
Description:Preprocessor directives are not program statements but directives for the preprocessor. They always start with a #(pound) symbol and are compiled before the execution of the main() function.
The compiler expects the preprocessor to be a single line of code. No semicolon is expected at the end of a preprocessor directive. In case a preprocessor directive has to extend beyond a single line this can be done by preceding the newline character at the end of the line by a backslash (\).