What do you mean by header file in C language?

header file contains the library functions along with the necessary definitions and declarations. C programming language have a directive, often called include (as well as copy and import), that causes the contents of a second file to be inserted into the original file. For example #include causes the contents of a file stdio.h to be inserted into original file.

other examples: math.h, stdlib.h, string.h

Leave a Reply