Golang入门教程（七）基本数据类型使用案例

package main

import "fmt"

func main() {
//使用 var 定义一个布尔类型并且初始化
var flag bool = false
fmt.Println("flag = ", flag)

//int var
var i, j, k int
i = 1
j = 2
k = 3
fmt.Printf("i=%d, j=%d, k=%d\n", i, j, k)

//var rune and init go特有数据类型，专用于存储Unicode编码
var r1, r2, r3 rune = 4, 5, 6
fmt.Printf("r1=%d r3=%d r3=%d\n", r1, r2, r3)

//var float32 and init
var (
f1 float32 = 2.1
f2 float32 = 3.4
)
fmt.Printf("f1=%f f2=%f\n", f1, f2)

//var string and init
var str1 string
str1 = "Tinywan"
fmt.Println("Hello, ", str1)

// :=
str2 := "hello str2"
fmt.Printf("str2 = %s \n", str2)
}