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Variables

Variable: stores values

var conferenceName = "Go Conference"
fmt.Println("Welcome to", conferenceName, "booking application!")

• camel case
• declared variables must be used; otherwise error

Constants

variables whose values do not change

const num = 50
fmt.Println(num)

error if attempt to change constant values

Print formatted data

printf

fmt.Printf("Hello my name is %s", myName)

• takes a template string that contains the text that needs to be formatted
• variable to replace the template string is added

Print and return formatted data

Sprintf

var varia = fmt.Sprintf("Hello my name is %v\n", name)

Another way to create variable

name := "hi"

• you cannot declare constants with this syntax
• cannot specifically define a type