Structure of C Program

/* This program prints Hello on Console Screen */

#include<stdio.h>

void main()

{

printf("hello world");

}

Comments:

In computer programming, a comment is a programmer-readable explanation or annotation in the source code of a computer program.Comments are statements that are not executed by the compiler and interpreter. All the comments will be put inside /*...*/ as given in the example above. A comment can span through multiple lines.

#include<stdio.h>

These commands tells the compiler to do preprocessing before doing actual compilation. Like #include <stdio.h> is a preprocessor command which tells a C compiler to include stdio.h file before going to actual compilation.

void main()

This is the main function, which is the default entry point for every C program and the void in front of it indicates that it does not return a value.

{...}

Curly braces which shows how much the main() function has its scope.

printf("hello world");

The C Programming language provides a set of built-in functions. In the above example printf() is a C built-in function which is used to print anything on the screen.

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