Unit 1 Lesson 1-3

Unit 1 Lesson 1-3

FUNCTION

(1) In programming, a named section of a program that performs a specific task. In this sense, a function is a type of procedure or routine. Some programming languages make a distinction between a function, which returns a value, and a procedure, which performs some operation but does not return a value.

Basics of a Function

Functions are a useful tool for helping us write and organize more complex pieces of code.

Example of Function in Python

call the function with parenthesis ( ) inside of the parenthsis is the command you want the code to make. 

FUNCTION

(1) In programming, a named section of a program that performs a specific task. In this sense, a function is a type of procedure or routine. Some programming languages make a distinction between a function, which returns a value, and a procedure, which performs some operation but does not return a value.

Watch this video about functions

https://youtu.be/79S-pzFRyBQ

Variable

A variable is a value that can change, depending on conditions or on information passed to the program. Typically, a program consists of instruction s that tell the computer what to do and data that the program uses when it is running.

Example of Variables

call the function with parenthesis ( ) inside of the parenthsis is the command you want the code to make. 

Watch this video about variables

https://youtu.be/Jvrszgiexg0

Constant

Data values that stay the same every time a program is executed are known as constants. Constants are not expected to change. Literal constants are actual values fixed into the source code. Named constants are values where a name is defined to be used instead of a literal constant.

Constant example 

Watch this video about Constant

https://youtu.be/6-hZZos24cQ

While Loop

A loop that continues to repeat while a condition is true. 

While Loop example 

Watch this video about While Loop

https://youtu.be/RtAPBvz6k0Y

Condition

A statement that a program checks to see if it true or false. If true, an action is taken. Otherwise, the action is ignored. 

Condition example 

Watch this video about Condition

https://youtu.be/I78FBGZX8B8

Conditionals

Statements that only run under certain conditions. 

Conditional example 

Watch this video about Conditionals

https://youtu.be/sO4UYCbTxxo

Commands

An instruction for the computer. Many commands put together make up algorithms and computer program. 

Command example 

Watch this video about Commands

https://youtu.be/i2KHYUhtOlM

Until

A command that tells you to do something only up to the point that something becomes true. 

Until example 

Watch this video about "until"

https://youtu.be/MjOU6uJDJuI