Conditionals.

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Presentation transcript:

Conditionals

Boolean Algebra

Boolean Logic Invented by George Boole Boolean logic is the basis for modern computer logic. Works only with binary values (that is two values) A cubby hole that holds either true or false George Boole was an english mathematician and philosopher. Born 1815, died 1864.

Is greater than or equal to Boolean expressions Operator Meaning == Is equal to != Is not equal > Is greater than < Is less than >= Is greater than or equal to <= Is less than or equal to Creates a Boolean value from numbers or strings

Conditionals

IF … THEN … ELSE if (MUST BE LOWERCASE) No else: do nothing if not true else: one or the other else if: nested function

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