How to do it...

1. Open the console and create the folder chapter03/recipe05.
2. Navigate to the directory.
3. Create the format.go file with the following content:

        package main

        import (
          "fmt"
        )

        var integer int64 = 32500
        var floatNum float64 = 22000.456

        func main() {

          // Common way how to print the decimal
          // number
          fmt.Printf("%d \n", integer)

          // Always show the sign
          fmt.Printf("%+d \n", integer)

          // Print in other base X -16, o-8, b -2, d - 10
          fmt.Printf("%X \n", integer)
          fmt.Printf("%#X \n", integer)

          // Padding with leading zeros
          fmt.Printf("%010d \n", integer)
 
          // Left padding with spaces
          fmt.Printf("% 10d \n", integer)

          // Right padding
          fmt.Printf("% -10d \n", integer)

          // Print floating
          // point number
          fmt.Printf("%f \n", floatNum)

          // Floating-point number
          // with limited precision = 5
          fmt.Printf("%.5f \n", floatNum)
 
          // Floating-point number
          // in scientific notation
          fmt.Printf("%e \n", floatNum)

          // Floating-point number
          // %e for large exponents
          // or %f otherwise
          fmt.Printf("%g \n", floatNum)

        }

1. Execute the code by running go run format.go in the main Terminal.
2. You will see the following output:

1. Create the file localized.go with the following content:

        package main

        import (
          "golang.org/x/text/language"
          "golang.org/x/text/message"
        )

        const num = 100000.5678

        func main() {
          p := message.NewPrinter(language.English)
          p.Printf(" %.2f \n", num)

          p = message.NewPrinter(language.German)
          p.Printf(" %.2f \n", num)
        }

1. Execute the code by running go run localized.go in the main Terminal.
2. You will see the following output: