Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. The include directive effectively just includes the header file's content in the source file. A header file is just a file that gets included in some source files, and when you include a file you just copy its content. You can write any program you want to without any include , but you'd have to manually put the stuff you need in your source files. Absolutely yes, you can even inlinme the function prototype you possibly need in the c file itself.
How to create your own Header Files in C/C++?
— Header files | Learn C++
Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. I am a trainer, my students asked me about this weird doubt and its my reason. Simply use your preprocessor and not the compiler with the right options which depend on your environment and it will generate a header-free equivalent CPP file which can be compiled. Doing the same thing manually is just very prone to errors Using the command gcc -E main. Remember, that include reads the file and puts it literally in the place of this compiler directive.
How to Write C Program Without Header File
As programs grow larger and make use of more files , it becomes increasingly tedious to have to forward declare every function you want to use that is defined in a different file. The other type of file is called a header file. Header files usually have a.
Step 1 : You write your program and save the file with a. Step 2 : You compile the program and generate the object file using gcc compiler in a terminal like this:. This was just the quick summary on how to compile and run C program in Linux. In order to run a C program in Linux, you need to have a C compiler present on your systems. In Debian and Ubuntu-based Linux distributions, use the apt command:.