1.2.3 Introduction to Programming

while condition code to execute endwhile ———–EXAMPLE————– while answer!=”computer” answer=input(“What is the password?”) endwhile

do code to execute until condition ———–EXAMPLE————– do answer=input(“What is the password?”) until answer==”computer”

for i=x to y code to execute next i ———–EXAMPLE————– for i=0 to 7 print(“Hello”) next i

Add (+) Subtract (-) Multiply (*) Divide (/) MOD (Remainder) DIV (Whole part of division) ^ (Power)

Equal to == Not equal to != Less than < Less than or equal to <= Greater than > Greater than or equal to >=

print(“hello world”)

VariableName=input(“Please enter your name”) Don’t forget to use casting if anything other than a string is required

stringname.subString(startingPosition, numberOfCharactersToReturn)

if condition then code to execute elseif condition then code to execute else code to execute endif ———–EXAMPLE————– if entry==”a” then print(“You selected A”) elseif entry==”b” then print(“You selected B”) else print(“Unrecognised selection”) endif

switch entry: case “A”: print(“You selected A”) case “B”: print(“You selected B”) default: print(“Unrecognised selection”) endswitch

function triple(number) return number*3 endfunction will always have the keyword return

procedure greeting(name) print(“hello”+name) endprocedure

myFile = openRead(“sample.txt”) while NOT myFile.endOfFile() print(myFile.readLine()) endwhile myFile.close()

myFile = openWrite(“sample.txt”) myFile.writeLine(“Hello World”) myFile.close()

array names[2] names[0]=”Ahmad” names[1]=”Ben” print(names[1])

Array board[8,8] board[0,0]=”rook”

Array board[8,8,8] board[0,0,0]=”rook”

ADD SUB STA LDA BRA BRP BRZ INP OUT HLT DAT

stringname.length

stringname.left(numberOfCharacters) stringname.right(numberOfCharacters)

stringname.upper stringname.lower

ASC(‘A’) Returns 65 as the ASCII value

CHR(65) Returns ‘A’