下面三个语句的效果一样

package main

import (
	"fmt"
)

func main() {
	day1 := 365.2425
	var day2 = 365.2425
	var day3 float64 = 365.2425
	fmt.Printf("day1=%v\nday2=%v\nday3=%v\n", day1, day2, day3)
}


执行结果：

day1=365.2425
day2=365.2425
day3=365.2425