Go语言类型声明以及转换、默认值

package main

import(
"fmt"
)

type TestInterface interface{}

func main(){
a:=65 // char A 's ascii code
b:=float64(a)
c:=string(a)
fmt.Println(a)
fmt.Println(b)
fmt.Println(c) // A
//fmt.Println(c==nil)//error
var ti TestInterface
fmt.Println(ti == nil)
fmt.Println("convert int to string vs string's empty", c=="") //false
var s string
fmt.Println("convert int to string vs string's empty", s=="") // true
}