The C program is often known as source code. The preprocessor works on the source code and creates expanded source code. This expanded source code is sent to the compiler for compilation. We can say that it is a program that processes our source program before it is passed to the compiler.
The preprocessor directive begins with # symbol. The preprocessor directives can be placed anywhere in the program but are most often placed at the beginning of program, before the first function definition. There can be only one directive on a line and there is no semicolon at the end of directive.
The preprocessor directive begins with # symbol. The preprocessor directives can be placed anywhere in the program but are most often placed at the beginning of program, before the first function definition. There can be only one directive on a line and there is no semicolon at the end of directive.
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