Methods of Algorithm Description Second Edition to accompany the

Solution
his solution uses sequence, repeat-until, if-then-else and subprogram structures.

7TN Pseudocode

An algorithm to describe a game in which the user tries to guess a number between 1 and 100, using no more than ten guesses.

BEGIN MAINPROGRAM

INITIALISATION

number of guesses is set to 0

GotIt is set to false

END INITIALISATION

generate a secret number using random number generator

REPEAT

get a guess from the user

IF the guess is in range THEN increment the number of guesses check the guess

ELSE

tell the user the guess is out of range

ENDIF

UNTIL guess is correct (GotIt is true) or number of guesses is 10

IF the guess is incorrect (GotIt is false) THEN tell the user they have run out of guesses (=10) tell the user the secret number

ENDIF

END MAINPROGRAM

BEGIN SUBPROGRAM check the guess

IF guess > secret number THEN

tell the user their guess is too big

ELSE

IF guess < secret number THEN tell the user their guess is too small

ELSE

congratulate the user on a correct guess tell them how many guesses they took set GotIt to true

ENDIF

ENDIF

END SUBPROGRAM check the guess

_O

Flowchart

An algorithm to describe a game in which the user tries to guess a number between 1 and 100, using no more than ten guesses.

Subprogram