A . . . . . . . . is a word that has special meaning in computer language.

The answer is: keyword.

A keyword is a word that has a special meaning in a computer language. Keywords are reserved words that have a specific meaning to the compiler or interpreter. They cannot be used as identifiers for variables, functions, or other entities.

Some common keywords in programming languages include:

• if: Used to create conditional statements.
• for: Used to create loops.
• while: Used to create loops that continue while a condition is true.
• do: Used to create loops that continue until a condition is true.
• break: Used to exit a loop.
• continue: Used to skip the rest of the current iteration of a loop.
• return: Used to return from a function.
• void: Used to declare a function that does not return a value.
• int: Used to declare an integer variable.
• float: Used to declare a floating-point variable.
• double: Used to declare a double-precision floating-point variable.
• char: Used to declare a character variable.
• string: Used to declare a string variable.
• array: Used to declare an array variable.
• struct: Used to declare a structure variable.
• class: Used to declare a class.
• public: Used to declare members that are accessible to all code.
• private: Used to declare members that are only accessible to code within the class.
• protected: Used to declare members that are accessible to code within the class and to code within derived classes.
• static: Used to declare members that are associated with the class itself, rather than with any particular instance of the class.
• virtual: Used to declare a member function that can be overridden in derived classes.
• const: Used to declare a variable that cannot be changed.
• volatile: Used to declare a variable that may be changed by hardware.

Keywords are case-sensitive, so if is different from IF.

Keywords are specific to each programming language. For example, the if keyword is used in C, C++, Java, and Python, but it is not used in JavaScript.

It is important to use keywords correctly in order to write correct code. Using the wrong keyword can cause errors in your code.