1.2.4 Types of Programming Language

Question 1

What is the difference between imperative and declarative paradigms?

Answer 1

• Imperative has programmers write code that dictates how a problem should be solved. e.g C
• Declarative has programmers define what should be achieved by the program. e.g. SQL

Question 2

Characteristics of high level languages

Answer 2

• Code is portable
• Programs are problem-oriented rather than machine-oriented.
• High levels of abstraction.
• Syntax is easy for humans to understand.
• Single line of code can accomplish multiple tasks.

Question 3

Advantages of high-level languages

Answer 3

• Portable.
• Easy to understand.
• Many libraries for pre-written code.

Question 4

What is immediate addressing mode?

Answer 4

• Operand specifies a value which will be used in the operation.

Question 5

What is direct addressing mode?

Answer 5

• Operand specifies the address of a memory location, the contents of which will be used in the operation.

Question 6

What is indirect addressing mode?

Answer 6

• Operand specifies the address of a memory location. the contents of which contains an address to another memory location whose contents will be used in the operation.

Question 7

What is indexed addressing mode?

Answer 7

• Operand specifies the address of a memory location which is the beginning of an array.

Question 8

What is relative addressing mode?

Answer 8

• Operand specifies a value to be added to the address of the current instruction.
• Used in branching.

Question 9

Advantages and uses of low level languages

Answer 9

• Used for embedded systems and device drivers.
• Allow programmer to created optimised programs with limited resources.