main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import "fmt"
func main() {
// an english letter (search web for: ascii control code)
var letter byte = 'A'
fmt.Println("an english letter:", letter)
// a non-english letter (search web for: unicode codepoint)
var unicode rune
unicode = 'Ç'
fmt.Println("a non-english letter:", unicode)
// a year in 4 digits like 2040
var year uint16 = 2040
fmt.Println("a year in 4 digits like 2040:", year)
// a month in 2 digits: 1 to 12
var month uint8 = 6
fmt.Println("a month in 2 digits: 1 to 12:", month)
// the speed of the light
var lightSpeed uint32 = 670616629 // miles
fmt.Println("the speed of the light:", lightSpeed)
// angle of a circle
var angle float32 = 35.8
fmt.Println("angle of a circle:", angle)
var pi float64
pi = 3.141592653589793
fmt.Println("PI number:", pi)
}
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