Structure Of C Program

The structure of c program consists of 5 sections. They were

Documentation Section

Preprocessor directives Section

Global Declaration Section

Main function Section
{
Declartion Part
Executable Part
}

User defined fucntions Section

Explanation

Section Name	Details / Purpose
Documentation	It is used to write comments for reference purpose like creation or modified date, author name etc.It is skipped by the compiler. Example : /* Authoe Name : Wisdom Materials Creation Date : 1/1/2019 Purpose: C language */
Preprocessor directives	Proprocessor directives / macros are statements which are executed before compilation.
Global Declaration	Here Global variables are defined and used throughout the entire program.
Main function	It contains 2 sections (declaration section and executable section).In Declaration section all the variables are declared and used in the executable section and every line should be separated by a semi colon. The language which uses semi colon as a saparator in the program between lines is called as a free form language.
User defined fucntions	Here users define their own functions for a particular task.

1. Write a to Print a statement in c language.

Program	Output
/* Hello World program in c Language */ #include <stdio.h> int main() { printf(“Hello World!”); return 0; }	Hello World!

Saving, Compilation and Running

Save file with extension .c and file name hw	hw.c
Compiling	ALT + F9
Running	CTRL + F9

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