Characteristics of C Programming

There are 6 characteristics:

1. Keywords

2. Operators

3. Separators

4. Constant

5. Predefined Functions

6. Syntax

Keywords

• Keywords are words that have special meaning to the C compiler.

• An identifier can't have the same spelling and case as a C keyword. We can't use keywords for our own purposes.

• There are a total of 32 keywords in C which are as follows:

Operators

• Special types of symbols i.e. are used to perform specific task

• Types: Binary operator, Unary operator, Ternary operator, etc.

• Total 44 operators are present

Separators:

• Separate things called as a token

• we can separate individual unit -> token

Constant

• Variable that doesn't change its value throughout the program is known as a constant.

• Types:

  • Alphanumeric constants -> a-z, A-z, 0-9

  • Numeric constants -> 0-9

Predefined FUnction

• all predefined functions are stored in respective header files.

• e.g.

  • stdio.h -> printf(), scanf(), ...

  • math.h -> sqrt(), ...

Syntax

• Syntax is the rules which need to be followed while developing a program

• e.g. To declare variable syntax is - data_type variable_name ;