Go Printing to Stdout and Stderr

Internal

• Go Language
• Go Code Examples

Bootstrapping Functions

Both print() and println() are pre-declared functions, ready to use without any import.

println()

func main() {
  println("something")
}

fmt.Printf()

https://golang.org/pkg/fmt/#Printf fmt.Printf()

import "fmt"

// ...
fmt.Printf("something")

Format Strings

The format strings contain conversion characters (ex. %s):

fmt.Printf("Hello %s", "Bob")

Prints according to a format specifier. Format specifier documentation https://golang.org/pkg/fmt

Pointers

fmt.Printf("%p\n", sPtr)

"%p" prepend the "0x" prefix.

Pointers can be also represented using "%X" (base 16, upper case characters).

Ints

fmt.Printf("%d\n",i)

Characters

fmt.Printf("%c\n",i)

Boolean Values

fmt.Printf("%t\n",b)