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What is iosteram in c plus plus?
The <iostream> include file is a header file that contains the prototype declarations of functions that provide the basic input/output mechanisms in C++. The <iostream> header file sets up the objects that initialize the basic input/output pathways, cout and cin.
What is dos.h?
A non-standard C header file that contained functions specific to accessing functions of MS-DOS. There is no need to use this header file, as there are standard libraries included in all major compilers that replace the functions in DOS.H.
Difference between library file and header file?
EX: pgm #include<stdio.h> main() { printf("haiii"); } Header file: (1) contains the function(printf) declaration (2) during preprocessing, the printf function is replaced by the function declaration Library file : (1) contains the function(printf) definition (2) during linking, the function declaration is replaced with the function definition.obviously, everything will be in object while linking
Why you use header files in c?
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.
Can Header file be called in main function or not?
No, main.c does not require a header file. When you have a ".c" and ".h" pair, the ".h" file is to declare the existence of functions that are defined in the ".c" files so that these functions can be called in other files. since "main.c" needs the headers of the other modules (to access their data types and functions) but usually doesn't have a header file itself.Header files aren't "called", they are "included",but usually not inside any function.
