Table of Contents
- 1 Why Java does not require any preprocessor?
- 2 Why pre processor directive does not have a semi colon at last?
- 3 What are pre processor directives?
- 4 Does Java require a preprocessor directive?
- 5 Which pre processor does not belong to conditional compilation?
- 6 What is difference between const and #define?
Why Java does not require any preprocessor?
Java does not have any form of the C #ifdef or #if directives to perform conditional compilation. In theory, conditional compilation is not necessary in Java since it is a platform-independent language, and thus there are no platform dependencies that require the technique.
Why pre processor directive does not have a semi colon at last?
These preprocessor directives extend only across a single line of code. As soon as a newline character is found, the preprocessor directive is considered to end. That’s why no semicolon (;) is expected at the end of a preprocessor directive.
Why preprocessor directives are needed?
Preprocessor directives, such as #define and #ifdef , are typically used to make source programs easy to change and easy to compile in different execution environments. Directives in the source file tell the preprocessor to take specific actions. Preprocessor lines are recognized and carried out before macro expansion.
What are pre processor directives?
Preprocessor directives are lines included in a program that begin with the character #, which make them different from a typical source code text. They are invoked by the compiler to process some programs before compilation.
Does Java require a preprocessor directive?
5 Answers. Java doesn’t have a preprocessor – so the simple answer is that you can’t. This sort of thing is normally handled in Java using Dependency Injection – which is both more powerful and more flexible.
What is pre processor in Java?
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.
Which pre processor does not belong to conditional compilation?
17) What is the file extension of expanded source code of . C file after preprocessing.? Explanation: def….Some good C Books.
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What is difference between const and #define?
The difference is that #define is processed by the preprocessor doing what amounts to simple text replacement. Const values defined like this are not visible for the actual compiler, while a variable defined with the const modifier is an actual typed “variable” (well not really that variable).
Why do we need preprocessor directive #include Iostream H?
The header iostream contains the functions required for input/output data streaming like cout, cin, etc. As our programs grow larger or the functionality becomes complex, we might want to divide our program into various files or import functionality from the other files.