Here are the answers to the questions: a) Syntax refers to the set of rules that define the correct structure and arrangement of symbols, keywords, and operators in a programming language. It dictates how statements must be written for the compiler or interpreter to understand them. b) Semantics refers to the meaning of the code. While syntax deals with the form of the code, semantics deals with what the code actually does or intends to do. A syntactically correct program might still have semantic errors if it doesn't perform the intended operation. c) Structure in computer programming refers to the overall organization and arrangement of the code within a program. This includes how different parts of the program (like functions, classes, and modules) are organized, how they interact, and how the program flows logically. II) Identifiers are unique names given to various program elements to distinguish them from one another. These elements include variables, functions, classes, objects, modules, and constants. Rules for giving identifier names: • Identifiers must start with a letter (a-z, A-Z) or an underscore (\_). • They can contain letters, digits (0-9), and underscores. • They are typically case-sensitive (e.g., myVar is different from myvar). • They cannot be a reserved keyword of the programming language (e.g., if, else, while). • They should be descriptive and meaningful to improve code readability. III) Comments in computer programming are explanatory notes or annotations within the source code that are ignored by the compiler or interpreter. They are not executed as part of the program. The use of comments in programming: • To explain complex logic or non-obvious parts of the code, making it easier for others (or the programmer themselves later) to understand. • To document the purpose of functions, variables, or entire sections of code. • To improve code readability and maintainability. • To temporarily disable parts of the code during debugging without deleting them. IV) Compile/Syntax Errors: These errors occur during the compilation phase (before the program starts running) when the code violates the grammatical rules or syntax of the programming language. The compiler cannot translate the code into machine-executable form until these errors are fixed. Example: In C++, forgetting a semicolon at the end of a statement: `cpp int x = 10 printf("%d", x); ` This would result in a syntax error because of the missing semicolon after int x = 10. Runtime Errors: These errors occur during the execution of a program, after it has successfully compiled. The program starts running but encounters an unexpected condition or operation that it cannot handle, causing it to crash or behave incorrectly. Example: Division by zero: `cpp int a = 10; int b = 0; int result = a / b; // This will cause a runtime error (division by zero) ` Another example is trying to access an array element outside its defined bounds. V) Data types are classifications that specify the type of value a variable can hold, determining the operations that can be performed on it and how it is stored in memory. Different categories of data types: • Primitive/Built-in Data Types: These are basic data types directly supported by the programming language. • Integers: Used for whole numbers (e.g., int, short, long). Example: int age = 30; • Floating-point Numbers: Used for numbers with decimal points (e.g., float, double). Example: float price = 19.99; • Characters: Used for single letters, symbols, or numbers (e.g., char). Example: char grade = 'A'; • Booleans: Used for logical values, typically true or false (e.g., bool). Example: bool isActive = true; • Composite/Derived/User-defined Data Types: These are more complex data types created by combining primitive types or other composite types. • Arrays: Collections of elements of the same data type, stored in contiguous memory locations. Example: int numbers[] = {1, 2, 3}; • Strings: Sequences of characters, often treated as an array of characters. Example: string name = "Xudat"; • Structures/Records: Collections of different data types grouped under a single name. Example (in C): struct Person { char name[50]; int age; }; • Classes/Objects: In object-oriented programming, classes are blueprints for creating objects, encapsulating both data (attributes) and functions (methods). Question Two: a) Write short notes: i. Function. A function is a self-contained block of code designed to perform a specific task. It takes inputs (parameters), processes them, and often returns an output. Functions promote code reusability, modularity, and make programs easier to organize, debug, and maintain. ii. Parameter. A parameter is a variable defined in the declaration of a function (or method) that acts as a placeholder for the values that will be passed into the function when it is called. These values, known as arguments, are used by the function to perform its operations. That's 2 down. 3 left today — send the next one.