Questions with Solutions: Constants of C

• C Constants are also like normal variables. But, only difference is, their values can not be modified by the program once they are defined.
• Constants refer to fixed values. They are also called as literals
• Constants may be belonging to any of the data type.

Types of C constant:

1.     Integer constants
2.     Real or Floating point constants
3.     Octal & Hexadecimal constants
4.     Character constants
5.     String constants
6.     Backslash character constants

Characters are simple alphabets such as a, b, c, d...., but with one exception. Any single-digit integer, such as 0, 1, 2, 3, 4,..., and special characters, such as $,%, +, -,*,..., etc., are similarly treated as characters in computer programming, and you can assign them to a character type variable by simply enclosing them in single quotes.

For example, we declare a character type variable ch and assign it the value 'a'.

char ch = 'a';

Strings are similar to sentences. They refer to a sequence of characters represented as a single data type. They're made up of a list of characters, which is actually an "array of characters." When passing information from the program to the user, strings come in quite handy.

/* String */
string str = "Ninjas";