Problem Solving

Three things to consider when deciding whether algorithm is succesful or not

Accuracy - must lead to expected outcome

Consistency - must produce same outcome everytime it’s run

Efficiency - must solve problem in shortest time possible

variable

container used to store data

identifier

unique name given to variable or constant

arithmetic operator

operator that performs calculation on two numbers

operator

character used to represent action (‘x’ for multiplication, ‘/’ for division)

DIV

returns whole number - quotient like division

MOD

returns remainder - modulus

^

to the power of - exponention -

e.g 3^3 = 27

what are the three ways algorithms can be displayed?

written descriptions, flowcharts and pseudocode

selection

construct that allows choice to be made between different alternatives

iteration

construct that makes process repeat until condition is met aka a loop

sequential

follows an order, one after another