✅ Include "ln" or not

: The println("...") method prints the string "..." abd moves the cursor to a new line. The print("...") method instead prints just the string "...", but does not move the curosr to a new line.

• Printf : When I want to print variables

✅ Fprint

: F means file

• func Fprint(w io.Writer, a ...interface{}) (n int, err error)
• func Fprintln(w io.Writer, a ...interface{}) (n int, err error)
• func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error)

✅ Sprint

: S means String

• func Sprint(w io.Writer, a ...interface{}) (n int, err error)
• func Sprintln(w io.Writer, a ...interface{}) (n int, err error)
• func Sprintf(w io.Writer, format string, a ...interface{}) (n int, err error)

: In this Sprint function, it doesn't print out on the screen or files. Howeverm it print out on the memory.