3.2 Programming

reserving space in memory for a variable

Saving a value into a variable

A named space in memory that can change

A named space in memory that can’t change

Type of data that can be stored e.g. integer

What the user types in

What the computer displays onto the screen

Changing from one data type to another

Joining data together

Adding non-executional code to your program

-To tell the programmer the constant should not change -This way it won’t accidentally change the value of it

camelCase and snake_case

What the computer displays onto the screen -VB: console.writeline(“”) OR console.write(“”) -Psuedocode OUTPUT “”

Input statements is what the user types in. The input can be assigned to variables. In VB you use {variable} = console.readline() In Pseudocode you use {variable} ← USERINPUT

They use a variety of different symbols and code. For example VB uses = to assign a variable whereas Pseudocode uses ←.

It can be used to turn a string into an integer so it can be useful for maths problems It can also turn an integer into a string so you can add decimal places i.e. 10.00

It can tell the programmer what the code is doing You can comment out code to see where it is going wrong (debugging)

So you know what their purpose is.

Performing a logical test to see what code to execute (i.e. IF… THEN… ELSE)

Repeating code

Code that is repeated a known amount of times (i.e. FOR i ← 0 TO 9)

Code that is repeated an unknown amount of times, it is repeated until a certain condition(s) is met. (i.e. WHILE anotherGo = FALSE)

Iteration inside of iteration (loop inside of a loop)

While checks condition at the start Do / Repeat Until loop checks condition at the end