1. COMPUTING

2. 2.2 Programming Techniques
Python Code:
variable/constant=input(“string”)
print(variable/constant + “string”)
if variable/constant (comparison e.g. ==) value: elif variable/constant <= value: else:
for i in range (0,5):
while variable == condition:
Declaration:
Identifying a variable or constant so that a suitable memory location can be assigned to it.
Constant:
data value is set when declared
Variable:
data value is set while program is running
Data Types:
real numbers (10.1)
integer (10)
string (hello!1)
char (a)
boolean (TRUE)
Casting:
changing a variable from one data type to another
Programming Constructs:
Sequence – an algorithm putting instructions in order (INPUT, OUTPUT and calculation)
Selection – an algorithm with a decision or choice (IF, ELSE, END IF)
Iteration – an algorithm with a loop (FOR, END FOR, REPEAT, END REPEAT, WHILE, END WHILE)

3. 2.2 Programming Techniques
Functions:
add (+)
subtract (-)
multiply (*)
divide (/)
to the power of (**) e.g. 42 = 4**2
DIV or // (Quotient):
division giving the answer as an integer, ignoring the remainder
e.g. 14/3 = 4 rem 2
MOD or % (Modulus):
finds the remainder, of a division
e.g. 14/3=4 rem 2
Assignment:
one = sets the value of a constant/variable (e.g. total = 10 – makes the variable total be equal to the value 10)
Comparison:
equal to ==
not equal to <> or !=
less than < and less than or equal to <=
greater than > and greater than or equal to >=
Boolean operators:
AND (e.g. 3<5 AND 2>1), OR (e.g. 1>8 OR 2==2),
NOT(10>6) – these will return a TRUE or FALSE result
String manipulation:
string.len = returns the length,
string+string = concatenates two strings,
string.upper/string.lower = upper and lowercase