Keywords and Comments in C

KEYWORDS IN C

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What are Keywords?

Keywords are the words that convey a special meaning to the compiler. This means the meaning of every particular keyword is already defined to the compiler of the Language.

There are total 32 Keywords in C Language and all have their meaning fixed to the compiler.

These are the keywords in C.

auto	double	int	struct
break	else	long	switch
case	enum	register	typedef
char	extern	return	union
const	float	short	unsigned
continue	for	signed	void
default	goto	sizeof	volatile
do	if	static	while

The Keywords in Red are the data types they are used to define the data type of a variable.

Example: int i; float f; char ch; long l;

The Usage of these keywords will be covered as they arrive in programming.

COMMENTS IN C

• ·       Comments are used in programs to explain or justify meaning of a program or any statement or any set of code.
• ·       Comments are also used for documentation of a program or project in which the name of program, aim of program, date of program development can be written.
• ·       Comments make it easy for a person other than the developer to understand the set of code.

Types Of Comments

In C there are only Single Line Comments, which means the single comment can be of one line only.

The Single Line comments are written in two ways

1.    By Using /* to start a comment and */ to end a comment.

2.    By Using (double Slash) // followed by comment to be written.

Example:

#include<stdio.h>    /*including standard input-output method.

#include<conio.h>   //including console input-output method.

void main()              //the main function.

   {

}