IO

Stdout/in

Output

Println - print with newline

Print - print w/out newline

package main
import "fmt"

func main() {
    str := "Hello"
    str := "Jorge"

    stringLength, err := fmt.Println(str1, str2, str3)
    # Prints Hello Jorge

    if err == nil {
        fmt.Println("string length:", stringLength)
    }
}

Printf

fmt.Printf("value of a Number: %v\n", aNumber)

got a lot of % stuff like %T for type

Sprintf is like printf but returns the value

Input

Scanf gets first string

buffo/os

package main

import (
    "fmt"
    "bufio"
    "os"
    "strconv"
    "strings"
)

func main() {
    reader := bufio.newReader(os.Stdin)
    fmt.Print("Enter text: ")
    str, _ := reader.ReadString('\n') #read string
    fmt.Println(str)

    fmt.Print("Enter a number: ")
    str, _ = reader.ReadString('\n') 
    trimStr := strings.TrimSpace(str) # read and parse float
    f, err := str.conv.ParseFloat(trimStr, 64)
    if err != nil {
        fmt.Println(err)
    } else {
        fmt.Println("Value of number:", f)
    }
}

Advanced Formatin

Modifer	Description
%06d	Print with width 6, pad with 0s
%s	Print as string
%T	Type