I am puzzled by the concept of header files. Is it possible to write our own header files? If we can write in what situations would it be required. I want to know whether in real time application one would write header files on their own.
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I am puzzled by the concept of header files. Is it possible to write our own header files? If we can write in what situations would it be required. I want to know whether in real time application one would write header files on their own.
Joel for your question of whether it is possible to write customized header files and for the question of whether customized header files finds its usage in real time application for both questions the answer is YES
I like to put the reason for why a header concept is needed. This is needed because to make the programming methodology simple and to save time in the process the header files are used. Say if one declares the variables, functions and so on in global place like header file then any further modification in any of this in any modules would make the process in other words the change needs to be made in a single place namely the header file apart from the modules.
Is that the header file must be located in the same folder where I have written my C program or is it that header file can be anywhere. If the header file can be placed anywhere then how can I include that in the program. Do I need to include the full pathname in my program?
Header files are part of efficient programming .
For example if the user doesn't need a cached copy of data as a part of his response taht means he needs a fresh copy of data to be generated by the server , and to achive this task he would be using
response.setHeader("Cache-Control","no-store"); //HTTP 1.1
response.setHeader("Pragma\","no-cache"); //HTTP 1.0
response.setDateHeader ("Expires", 0); //prevents caching at the proxy server
and also there are many more headers , once see google.com for this .