2.2.1 programing techniques

Question 1

Sequence

Answer 1

when code is executed line by line

Question 2

Selection

Answer 2

A block of code is run if a specific condition is met, using IF statement.

Question 3

Iteration

Answer 3

A block of code is executed a certain number of times or while condition is met.
FOR, WHILE or REPEAT loops.

Question 4

types of iteration

Answer 4

Count controlled: iteration is repeated certain amount of times.
condition controlled: iteration continues until a given condition is met.

Question 5

RECURSION

Answer 5

a programming construct in which subroutines calls it self until a certain condition is met.

Question 6

advantages of recursion

Answer 6

recursion can be presented in fewer lines pf code, which make it less prone to errors.

Question 7

disadvantages of recursion

Answer 7

inefficient use of memory, as the subroutine calls it self too many times.

Question 8

Local variables

Answer 8

local variables can only be accessed within the block (subroutine) of code where they defined.

Question 9

advantages of local variables

Answer 9

-multiple local variables with the same name can exist in different block of codes.
- using local variables ensure that subroutines are self contained, with no danger of variables been affected by codes outside the subroutine

Question 10

Global variables

Answer 10

can be accessed across the whole program.
all variables used in the main body of program are considered global varibles

Question 11

advantages of global variables

Answer 11

useful for values that need to be used by multiple parts of the program

Question 12

IDE

Answer 12

integrated development environment.
a program which provide a set of tools to make it easier for the programmer to develop the code.

Question 13

IDE stepping

Answer 13

this allows you to monitor the effect of each line by executing single line at a time.

Question 14

IDE breaking point

Answer 14

IDE allows user to set a point in the program where the program will stop, it can be based on a condition or set to occur at a specific line

Question 15

IDE Source code editor

Answer 15

The editor aims to make the coding process easier by providing features like autocompletion of words, indention and syntax highlighting

Question 16

IDE debugging tools

Answer 16

some IDEs also provide run-time detection errors with a guide as to where in the code they likely to occur

Question 17

IDE variable watch

Answer 17

sometimes used to pinpoint errors, this is useful feature to observe how the content of a variable change in real time through execution of a program

Question 18

Parameter

Answer 18

parameter is a variable used in a function or procedure to receive input data. Parameters allow you to pass information to functions or procedures, enabling code to be more flexible and reusable.