Definition of Quatrain. A quatrain is a stanza in a poem that has exactly four lines. Some quatrains comprise entire poems, while others are part of a larger structure. Quatrains usually use some form of rhyme scheme, especially the following forms: AAAA, AABB, ABAB, and ABBA.
Based on the data type of a variable, the operating system allocates memory and decides what can be stored in the reserved memory. Therefore, by assigning different data types to variables, you can store integers, decimals, or characters in these variables. There are two data types available in Java â.
JavaScript has the following expression categories: 1  Arithmetic: evaluates to a number, for example 3.14159. 2  String: evaluates to a character string, for example, Fred or 234. 3  Logical: evaluates to true or false. 4  Primary expressions: Basic keywords and general expressions in JavaScript.