Main.go

package main

import (
	"fmt"
	"strconv"
)

// you can declare on package level, cannot use short hand here
var i0 int = 11

// this variable is set to be global because it is uppercased
var I6 int = 86

// you can declare block of variables
var (
	i5name string = "i5"
	i5pronunciation string = "aifaif"
)

func main() {
	// printing hello world
	fmt.Println("Hello Dio!")

	fmt.Println("i0 is", i0)
	// declaring a variable
	var i1 int
	i1 = 42
	i1 = 27
	fmt.Println("i1 is",i1)

	// declaring and assigning can be one line
	var i2 int
	i2 = 42
	fmt.Println("i2 is",i2)

	// short hand for integer i guess?
	i3 := 42
	fmt.Println("i3 is",i3)

	// printing the type and value
	// := can only be inferred as int or float64 type
	i4 := 20
	fmt.Printf("i4 is %v, the type is %T", i4, i4)

	// shadowing
	// when variable is redeclared, the inner scope takes place>>
	fmt.Println("i0 is",i0)
	var i0 int = 12
	fmt.Println("i0 is",i0)

	// to convert int into string
	var i5 int = 42
	fmt.Printf("%v %T", i5, i5)
	var j5 string
	j5 = strconv.Itoa(i5)
	fmt.Printf("%v %T\n", j5, j5)

	// Boolean
	var truth bool = true
	fmt.Printf("%v, %T\n", truth, truth)

	var n bool
	fmt.Printf("%v, %T\n", n, n)

	var n1 uint16 =42
	fmt.Printf("%v, %T\n", n1, n1)

	a := 10
	b := 3
	fmt.Println(a+b) // should be 13
	fmt.Println(a-b) // should be 7
	fmt.Println(a/b) // should be 3.33
	fmt.Println(a*b) // should be 30
	fmt.Println(a%b) // should be 1
  

	// a = 1010
	// b = 0011
	fmt.Println(a&b) // 
	fmt.Println(a|b) // 
	fmt.Println(a^b) // 
	fmt.Println(a&^b) // 

	var input string
	fmt.Scanln(&input)

	fmt.Println(input)

	var input2 int
	fmt.Scanln(&input2)

	fmt.Println(input2+2)
}