Chapter 4: Software
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What is an operating system
It provides a user interface so we can input data it manages apps
what do integer, real, char, string, float, and boolean mean?
integer: any whole number real: they include fractions or decimal points char: whole keyboard string: all letters boolean: true and false values float: float is used to store approximate values, not exact values.
what do sequence, repetition, totaling, selection, and counting
sequence: the order in which code is executed repetition: Any case where code is repeated totaling: The process of keeping a running total of values in a program, such as a score. selection: Where a section of code runs only if a condition is met. counting: Is used to find the number of numbers in a list.