go基础之Printf和Println的区别

package main //必须有一个main包

import "fmt"

func main() {
	a := 10
	//一段一段处理，自动加换行
	fmt.Println("a = ", a)

	//格式化输出， 把a的内容放在%d的位置
	// "a = 10\n" 这个字符串输出到屏幕，"\n"代表换行符
	fmt.Printf("a = %d\n", a)

}

a =  10
a = 10

package main //必须有一个main包

import "fmt"

func main() {
	a := 10
	b := 20
	c := 30
	fmt.Println("a = ", a, ", b = ", b, ", c = ", c)
	fmt.Printf("a = %d, b = %d, c = %d\n", a, b, c)
}

a =  10 , b =  20 , c =  30
a = 10, b = 20, c = 30