What is preprocessor with example?
In computer science, a preprocessor (or precompiler) is a program that processes its input data to produce output that is used as input to another program. A common example from computer programming is the processing performed on source code before the next step of compilation.
What is AC preprocessor?
The C preprocessor is the macro preprocessor for the C, Objective-C and C++ computer programming languages. The preprocessor provides the ability for the inclusion of header files, macro expansions, conditional compilation, and line control.
What is Java preprocessor?
A preprocessor is a program that works on the source before the compilation. As the name implies, the preprocessor prepares the source for compilation. The notion of the preprocessor has been there from the earliest times of programming languages.
What is preprocessor directive with example?
Preprocessing directives are lines in your program that start with # . The # is followed by an identifier that is the directive name. For example, #define is the directive that defines a macro. Whitespace is also allowed before and after the # . The # and the directive name cannot come from a macro expansion.
Why preprocessing directives are used eg #include Iostream?
The #include directive allows a programmer to include contents of one file inside another file. This is commonly used to separate information needed by more than one part of a program into its own file so that it can be included again and again without having to re-type all the source code into each file.
What is C preprocessor directives?
Description. The preprocessor will process directives that are inserted into the C source code. These directives allow additional actions to be taken on the C source code before it is compiled into object code. Conditional expresssion which can be used to include source code for compilation.
What is macro in Java?
These macros handle text formatting and generation tasks that are particularly useful in writing Java code. The macro compares the buffer’s path name with the elements of the classpath being used by the jEdit session. …