1. Algorithms A Central Heating system Start Is temp <19
Turn Heating on
Is temp >20
Turn Heating off

2. Algorithms
Calculate the area of a rectangle
What mathematical calculation do you have to perform on these two inputs?
What two inputs do you need to calculate the area of a rectangle?
Height
Width
Multiplication

3. Start
Input width
Input Height
Area = width x height
OUTPUT area
Stop

4. Pseudocode Input value If value >= 1 THEN If value >= 10 THEN
Output “value OK
Else
Output “value not OK”
ENDIF
Return to input

5. Input key
If key arrow pressed
Move left
Move right
Move down
Move up

6. Pseudocode Press key If key = right arrow THEN move right Else
If key = left arrow THEN move left
If key = up arrow THEN move up
If key = down arrow THEN move down
ENDIF

7. A garden centre has a loyalty card scheme that gives members a 10% discount if they spend more than £50. If any customer spends more than £100, then they get a 5% discount on top of any discounts they may already have. Create a flow chart to show how this program might work

8. Start No disc No disc Disc = 15% Disc = 10% YES NO NO NO YES YES YES
Loyalty card
Spend > £100
Spend > £50
YES NO NO
No disc NO
Loyalty card
Taken out
YES
YES
YES NO
No disc
Disc = 15%
Disc = 10%

9. Start No disc Disc = 10% Disc 5% Disc = 15% NO YES NO YES NO YES
Loyalty card
Spend > £50
No disc
YES NO NO
YES
Disc = 10%
Spend > £100
Disc 5% NO
YES
Disc = 15%

10. Start No disc Disc = 15% Disc = 10% NO NO YES NO YES YES Loyalty card
Spend > £100
Spend > £50 NO NO
No disc
YES NO
YES
YES
Disc = 15%
Disc = 10%

11. Start Loyalty card scheme No disc Disc 5% Disc = 10% Disc = 15% NO NO
Spend > £100
Spend > £50 NO NO
No disc
YES
YES
Loyalty card
Loyalty card
YES NO NO
YES
Disc 5%
Disc = 10%
Disc = 15%

12. Pseudocode INPUT spend INPUT loyalty card IF spend > 100 THEN
IF loyalty card = YES THEN discount = 15%
ELSE IF loyalty card = NO THEN discount = 5%
ENDIF
ENDIF
IF spend < 100 THEN
IF spend > 50 THEN
IF loyalty card = YES THEN discount = 10%
ELSE
IF loyalty card = NO THEN no discount
ENDIF
ENDIF
ENDIF
IF spend < 50 THEN no discount
ENDIF