Data Types and Programming Concepts

Question 1

Integer

Answer 1

A whole number data type.

Question 2

Real/Float

Answer 2

A decimal number data type.

Question 3

Boolean

Answer 3

A data type that can have a value of true or false.

Question 4

Character

Answer 4

A single alphanumeric character data type.

Question 5

String

Answer 5

A group of characters data type.

Question 6

Data / Time

Answer 6

A data type used for storing a point in time.

Question 7

Pointer / Reference

Answer 7

A data type used for storing memory addresses.

Question 8

Records

Answer 8

A collection of fields data type.

Question 9

Arrays

Answer 9

An indexed set of elements data type.

Question 10

Variable Declaration

Answer 10

Creating a variable for the first time by giving it a name and a data type.

Question 11

Constant Declaration

Answer 11

Creating a constant for the first time by giving it a name and a data type. The value of a constant cannot change while the program is running.

Question 12

Assignment

Answer 12

Giving a variable/constant a value.

Question 13

Iteration

Answer 13

Repeating an instruction.

Question 14

Selection

Answer 14

Comparing values and choosing an action based on a condition.

Question 15

Subroutine

Answer 15

A block of code with a set of instructions designed to perform a frequently used operation. Can be recalled.

Question 16

Definite iteration

Answer 16

Iteration where the number of repetitions required is known before the loop starts.

Question 17

Indefinite iteration

Answer 17

Iteration where the number of repetitions required is not known before the loop starts.

Question 18

Nested structures

Answer 18

Used with selection and iteration - one structure is placed within another using indentation.

Question 19

Meaningful identifier names

Answer 19

Variable names that are sensible and meaningful, making it easier for others to understand the purpose of the variable.

Question 20

Sequence

Answer 20

One of the three main programming concepts, which refers to the order in which instructions are executed.

Question 21

SUMMARY

Answer 21

The three main programming concepts are sequence, selection, and iteration. There are many data types, and each has its own use. Variables must be named sensibly and have a meaningful name, making it easier for other programmers to identify their purpose in the program.