Skip to main content

Basic Structure Of Any "C" Program


Structure Of Any C Program:-

Before we study the basic building blocks of the C programming language, let us
look at a bare minimum C program structure so that we can take it as a
reference in the upcoming chapters.
A C program basically consists of the following parts:
1. Preprocessor Commands
2.Functions
3.Variables
4. Statements & Expressions
5. Comments
Let us look at a simple code that would print the words "Hello World":

Example Program:-











                                                                                     


                                                                                                                                                                                                Explanation of structure of program using Above Program:-

1.)The first line of the program #include <stdio.h> is a preprocessor
command, which tells a C compiler to include stdio.h file before going to
actual compilation.
2.)The next line int main() is the main function where the program execution
begins.
3.)The next line /*...*/ will be ignored by the compiler and it has been put to
add additional comments in the program. So such lines are called
comments in the program.
4.)The next line printf(...) is another function available in C which causes the
message "Hello, World!" to be displayed on the screen.
5.)The next line return 0; terminates the main() function and returns the
value 0.
How To Compile And Run Above Program
1.Windows User:-
install turbo c,or dev compiler and type this program to compiler
and save it any name.c after that compile it by ALT+F9 and
then run by CTRL+F9..

OUTPUT OF THIS PROGRAM:-

Hello,World!
                         That's all about Structure Of Any C
                          programs...
                         I hope You Will Like It:
                        Please Share This On Sociel Media

Comments

Popular posts from this blog

Calling Method Of Function In C Language

Calling Method In C Language:- As We Already See That Any Function has Some Arguments Or void If We Use Variable As Argument Then It Is Called FORMAL PARAMETERS. *Formal parameters behave like other local variables inside the function  and are created upon entry into the function and destroyed upon exit. In C Language there are two ways in which arguments can be passed to a function:- 1)Call by value:-      (using value) 2)Call by reference:-  (using pointer) Now We Will See One By One These Arguments By Taking Suitable Example: 1)Call by value:-  *In This Method actual value copies to formal parameter: *Due To That changes made to the parameter inside the function  have no effect on the argument. This will cleared by following example:- Example Program:- //in this program we swap two variable using third variable: #include <stdio.h> /* function declaration */ void swapping(int a, int b); int main () { /* local variable definition */ int x =...

Types Of Array In C language

Two Dimensional Array :- * It Is The Combination Of Two One Dimensional Array * It Is Used To Implement Matrix Operation . *A two-dimensional array can be considered as a table which  will have 'a' number of rows and'b'number of columns. Declaration Of Two Dimensional Array:-   data_type Array_name [size of row][size of column]; For Example:- int matrix[3][4]; in above example we will store a matrix of 3*3. This Will Cleared From Following Figure:- *It can be represented a[i][j].where i and j represents  row and column respectively. Initialization Of Two Dimensional Array:- let us consider an array "float a[3][3]"then it will be initialized float a[3][3]={                {1.2,2.3,4.3} //initializers for row indexed by 0                {2.1,2.2,2.3} //initializers for row indexed by 1                {3.1,3.4,3.6} //initializers for row indexed by 2 ...

Basic Syntax Of "C" Language

1).Tokens In C Language:- A C program consists of various tokens and a token is either a keyword, an identifier, a constant, a string literal, or a symbol. For example, the following C statement consists of five tokens:        printf("Hello, World! \n"); 1.printf 2.( 3."Hello, World! \n" 4.) 5.;(semicolon) Let Us Describe about these Tokens One By One:- A.) Semicolons:- the semicolon is a statement terminator. That is, each individual statement must be ended with a semicolon. It indicates the end of one logical entity. For Example: printf("Helo"); getch(); Given Above Is Example Of Termination Of Two Statements. B.)Comments:- Comments are like helping text in your C program and they are ignored by the compiler. They start with /* and terminate with the characters */ as shown below: /*This Is My First Program*/        OR We can use double slash(//) for comment one line as:- //this is My First Program C.) Identifiers:- A C identifier is a name used ...