2.2 Selection

2.2.1 Conditionals

1. - The way statements are sequenced and combined in a program determines the computed result. Programs incorporate selection constructs to make decisions to handle varied input values.

1. - How can we store data in a program to solve problems?
  - What might happen if you completed the steps in your regular morning routine to get ready and go to school in a different order? How might the reordering affect the decisions you make each morning?
  - How do video games group different actions for a player based on what key is pressed on the keyboard or controller? How do apps group different actions together based on user interaction, such as pressing buttons?
  - What types of problems can be solved more easily with a computer, and what types can be solved more easily without a computer? Why?

Express an algorithm that uses selection without using a programming language.
For selection:
- Write conditional statements.
- Determine the result of conditional statements.
For nested selection:
- Write nested conditional statements.
- Determine the result of nested conditional statements.

Selection determines which parts of an algorithm are executed based on a condition being true or false.
Conditional statements or “if-statements” affect the sequential flow of control by executing different statements based on the value of a Boolean expression.
Nested conditional statements consist of conditional statements within conditional statements.

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