What is a literal string? A literal string is a sequence of characters enclosed in quotation marks, such as “Hello, world!” or “12345″. It is called a “literal” because the characters within the quotation marks are interpreted exactly as they appear, without any special meaning or processing. Why are literal strings useful in programming? Literal strings are commonly used in programming because they allow you to represent and manipulate textual data. They are used for tasks such as displaying messages to users, storing and processing input data, defining constants, and many other operations involving text. How do I declare a literal string in different programming languages? In most programming languages, you can declare a literal string by enclosing the characters within quotation marks. For example, in Python, you can declare a literal string by using either single quotes (‘Hello’) or double quotes (“Hello”). Similarly, in languages like Java, C++, and JavaScript, you can use double…