Hello this is raman middha I have a problum in one question meaning of #include<stdio.h>
Explain it

Basically it is telling to the compiler to make the library stdio.h available so that the functions can be used in your code.

Stdio.h includes all of the standard I/O functionality (like allowing keyboard input, etc)

Sir thanks for giving such kind of support but one thing I want to clear meaning of only# in header file with technical definition

In C programming # stands for preprocessors..
Means that it get executed first...
This means stdio library get's embeded into your executable..

Means of #include <stdio.h>

# means preproceesor directives the process start to be a before compilation and include <stdio.h> means all input and output pre define functions to be include .

'#' is a preprocessor directive. The compilers processes
Lines in a code starting with a '#' before it compiles the
Whole code . Example #define TEN 10 the compiler would
Replace all instances of TEN by 10 in the code and only then
Compile the code...

#include<stdio.h>

'#' is a preprocessor than include is stand for including header files which is in angular brackets and now the meaning of <> angular bracket is used to shown the compiler that search files from subdirectory of Library and std means Standard io means Input/Output and
.h that means it includes header file.