Block of statements
One or more statements enclosed in an open curly brace '{' and a closing curly brace '}'.
Boolean expression
A mathematical or logical expression that is either true or false.
complex conditional
A Boolean expression with two or more conditions joined by a logical and '&&' or a logical or '||'.
conditional
Used to execute code only if a Boolean expression is true.
DeMorgan's Laws
Rules about how to distribute a negation on a complex conditional.
logical and
Used to only execute the following statement or block of statements if both conditions are true
logical or
Used to execute the following statement or block of statements if one of the conditions are true
negation
turns a true statement false and a false statement true
short circuit evaluation
The type of evaluation used for logical and '&&' and logical or '||' expressions. If the first condition is false in a complex conditional with a logical and the second condition won't be evaluated. If the first condition is true is a complex conditional
if (Boolean expression)
used to start a conditional statement. This is followed by a statement or a block of statements that will be executed if the Boolean expression is true.
else
used to execute a statement or block of statements if the Boolean expression on the if part was false.
else if (Boolean expression)
used to have 3 or more possible outcomes such as if x is equal, x is greater than, or x is less than some value. It will only execute if the condition in the 'if' was false and the condition in the else if is true.