T7 - Programming fundamentals

Question 1

data type

Answer 1

The kind of values that can be used in a data item

Question 2

eg of data types

Answer 2

integer, float / real, character, string, Boolean

Question 3

eg of arithmetic operators

Answer 3

+, -, *, /, ^, MOD, DIV

Question 4

The operator DIV

Answer 4

is used for integer division, also known as quotient

Question 5

MOD (modulus) is

Answer 5

used to find the remainder when dividing one integer by another

Question 6

data type and memory

Answer 6

Data types will determine the amount of memory allocated

Question 7

constants in pseudocode n python

Answer 7

const
-snakecase inpython

Question 8

Snake case

Answer 8

• separated with an underscore and capital letters

Question 9

Use of snake case

Answer 9

• shows programmer that it must stay the same
  -prevents the value from being changed accidentally by a part of code

Question 10

Constants

Answer 10

• won’t change its value whilst program runs
• can be changed by a programmer before the program is compiled or translated

Question 11

Casting

Answer 11

• converts data types

Question 12

Pseudocode:
converts a string s to an integer

Answer 12

int(s)

Question 13

Inputs from the user

Answer 13

are strings

Question 14

Concatenating means

Answer 14

joining together:

Question 15

The concatenate operator is

Answer 15

+
- used to join together strings

Question 16

pseudocode: converts a string s to a number with a decimal point

Answer 16

float(s)

Question 17

pseudocode: converts an integer or floating point number x to a string

Answer 17

str(x)

Question 18

pseudocode: converts a string (e.g.”True”) to a Boolean

Answer 18

bool(s)

Question 19

pseudocode: ASC(‘a’)

Answer 19

evaluates to 97, using ASCII

Question 20

pseudocode: CHR(97)

Answer 20

evaluates to ‘a’

Question 21

String handling functions:
Python

Answer 21

= variable.len

Question 22

Pseudocode: string length

Answer 22

str.length

Question 23

Pseudocode: letters from right

Answer 23

str.right(n)

Question 24

Pseudocode: letters from left

Answer 24

str.left(n)

Question 25

pseudocode substring

Answer 25

str.substring(start,end)

Question 26

all uppercase

Answer 26

.upper

Question 27

all lowercase

Answer 27

.lower =

Question 28

Comments:

Answer 28

to describe the purpose of the program
to state the author of the program
to explain what the code does

Question 29

comments - python

Answer 29

Python - comments start with #

Question 30

comments in Pseudocode

Answer 30

• start with a double slash //