# include <stdio.h>
# include <conio.h>
# include <stdlib.h>
# include <string.h>
No explicit limit, you can use so many header files as you want.
Header files are used to have declarations. It is simple to include a single header file than writing all the needed functions prototypes.
Java doesn't use header files.
It shows the header information..
in the java as we use the inheritance property in the same way we can get the the inheritance property in c by using the prepared header files( .h files). there a single program in c use the many methods of many header files like math.h give us to use the use of floor(), sqrt() e.t.c. functions..
the use of header files is to add functionality. Header files are basically saying put code in that header file here so you don't have to type that many lines of code.
Header files allow the user to make use of predefined libraries in order to save time and reuse code.
You can use header files (more specifically "include" files) anywhere in a program. You just have to consider what type of statements, declarative or definitive, there are in the include file, and what your effective scope is. That is why they are generally at the top.
A header file in C is used to import the features of parent classes in our class. The same feature is provided by the import statement in Java hence the header files are not used.
Programming in C Third Edition by Stephen G Kochan is a book about a programming language that consists of cross platform usage as long as you had adhered to the rules of the language! This language can be combined with other "SDK" header files or basically code sepearated and formatted to isolated header files that consist of "variable declarations", "function declarations" and perform certain matmatical operations for you as you use the functions in a "modular" way and share peacfully.
Header files in Turbo C serve the same purposes they serve in every other implementation of the C programming language. The primary function is to separate interfaces (declarations) from implementations (definitions). This is useful whenever we have interfaces that are common to more than one translation unit. Rather than repeatedly typing out the same declarations over and over, we can simply include the header or headers that contain those declarations. The include statements force the compiler to copy the contents of the named file in place, thus ensuring the declarations are consistent throughout our program.
strcat if u wnt to use strcat then include string.h header file