Go语言编程快速入门：P04 循环分支
P04 循环分支
比较
true/false
- ==
- ≤/</>/≥
利用if/else 做分支
正常语法：if---else if---else ----
switch--case--default: 不需要break
package main
import (
"fmt"
)
func main() {
const score = 85
if score > 90 && score < 100 {
fmt.Println("Xiu")
} else {
fmt.Println("Not xiu")
}
}package main
import (
"fmt"
)
func main() {
const score = 85
switch true {
case score < 90:
fmt.Println("Not Xiu")
case score > 80 && score <= 90:
fmt.Println("Good")
default:
fmt.Println("Hurry up.")
}
}switch--fallthrough关键字
默认可以继续执行下个case里的内容
package main
import (
"fmt"
)
func main() {
const score = 85
switch true {
case score > 85 && score <= 90:
fmt.Println("Good")
case score < 90:
fmt.Println("Not Xiu")
fallthrough
case score != 0:
fmt.Println("Good stu.")
default:
fmt.Println("Hurry up.")
}
}for 循环/break/continue
package main
import "fmt"
func main() {
var count = 10
for count > 0 {
fmt.Println("count value: %v", count)
count--
}
}作业
随机生成100个数，与自己的数比较，看是大了，还是小了
package main
import (
"fmt"
"math/rand"
)
func main() {
var mynum = 45
var times = 100
for i := 0; i < times; i++ {
var tar = rand.Intn(101)
fmt.Println()
if tar == mynum {
fmt.Printf("ok")
} else if tar < mynum {
fmt.Printf("small than my num %v", tar)
} else {
fmt.Printf("big than my num %v", tar)
}
}
}