Procedural Programming

Question 1

What is a data type

Answer 1

a classification that defines the kind of values a variable can hold and the operations that can be performed on them

Question 2

What is an integer

Answer 2

A whole number, positive or negative, including zero

Question 3

WHat is a float

Answer 3

A positive or negative number which can have a
fractional part

Question 4

What is a boolean

Answer 4

A value which is either true or false

Question 5

WHat is character

Answer 5

A single number, letter or symbol.

Question 6

What is a string

Answer 6

A collection of characters

Question 7

WHat is a pointer

Answer 7

A way of storing memory addresses.

Question 8

What is a record

Answer 8

A collection of fields, each of which could have a
different data type

Question 9

What is an array

Answer 9

A finite, indexed set of related elements each of which
has the same data type.

Question 10

What is user defined data type

Answer 10

User-defined data types are derived from existing data
types in order to create a customised data structure.

Question 11

WHat is variable declaration

Answer 11

Creating a variable for the first time, giving it a name
and sometimes a data type. This allocates a portion of
the computer’s memory to the variable.

Question 12

What is constant declaration

Answer 12

but when creating a constant. The value of a constant does not change
while the program is running.

Question 13

What is a subroutine

Answer 13

A named block of code containing a set of instructions
designed to perform a frequently used operation.

Question 14

WHat is length

Answer 14

Position Returns the position of a specified character within a string.

Question 14

What is a sub string

Answer 14

Returns the number of characters in a specified string.

Question 15

What is substring

Answer 15

Substring Given a starting position and a length, returns a portion of a string

Question 16

WHat is concatenation

Answer 16

Joining two or more strings together to form a new, longer
string

Question 17

What is character to charcater code

Answer 17

Returning the character code which corresponds to a
specified character.

Question 18

What is characater code to character

Answer 18

Returning the character represented by a given character
code.

Question 19

WHat is random number generator

Answer 19

A built-in function takes a seed value and uses a series of
mathematical operations to arrive at a number

Question 20

What is a random integer generator

Answer 20

import random
random_integer = random.randint(1, 10)
print(random_integer)

Question 21

Difference between procedure and function

Answer 21

Procedure dosent always returns a vlue function always returns a value

Question 22

What is local variable

Answer 22

A local variable is a variable that can only be accessed from the subroutine within which it
is declared. It is memory efficient

Question 23

What is global variable

Answer 23

global variables can be accessed from any part of a program
and exist in memory for the entire duration of the program’s execution.

Question 24

WHat are stack frames used for

Answer 24

Stack frames are used by computers to store return addresses, parameters and local variables for each subroutine call

Question 25

WHat is recursive subroutine

Answer 25

A recursive subroutine is one which is defined in terms of itself

Question 26

How is exception handling done

Answer 26

● It does this by: ○ Pausing execution of the program ○ Saving the current volatile state of the program on the system stack ○ Running a section of code called a catch block ● Once the exception has been handled, the program uses the system stack to restore its previous state before resuming execution.

Question 27

What is assignment

Answer 27

Giving a constant or variable a value.

Question 28

WHat is iteration

Answer 28

Repeating an instruction, this could be definite or indefinite (see below).

Question 29

Advantages of using a constant

Answer 29

makes code easier for a human to understand. using a constant makes changing that value much easier as it only needs to be updated in one place.

Question 30

Advantages of a local variable

Answer 30

They only exist in the computer’s memory when their parent subroutine is executing. This makes local variables a more memory efficient

Question 31

Advantages of a global variable

Answer 31

accessed from any part of a program and exist in memory for the entire duration of the program’s execution.

Question 32

WHat is a base case

Answer 32

the crucial stopping condition in a recursive function

Question 33

What is a stakc overflow

Answer 33

When two many items are pushed unto a stack