HackerRank C programming Quiz- 1

<strings.h> is not a library in C, but <string.h> is a library in C

#include "stdio.h" and #include <stdio.h> both are correct way to write library functions in C

Constant is an entity whose value remains fixed.

Variable is an entity that acts as storage place for a value. Variables stores the recent values

We cannot use a keyword as a variable name, function name or any other identifier. They are used to define the syntax and structure of any language

There are 32 keywords in C

// is used to write single line comment

/**/ is used to write multiline comments

A variable name cannot start with numeric

The smallest lexical unit in a program is known as a token.

Identifier is a legal name given to a variable or a function