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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                > go語言的流程控制語句主要講if、for。 [TOC] ## if語句 ### if語句 ~~~ package main import "fmt" // 入口函數main func main() { // 給變量i賦值 i := 101 if i > 100 { fmt.Println("i大于100") } // 以上語句可以簡寫成一行 if j := 101; j > 100 { fmt.Println("j大于100") } } ~~~ ### if...else 語句 ~~~ package main import "fmt" // 入口函數main func main() { if i := 201; i > 200 { fmt.Println("大于200") } else if i > 100 { fmt.Println("大于100") } else { fmt.Println("其他") } } ~~~ ## for循環語句 > Go語言的for語句,非常靈活,可以表達其他語言的for、while循環語句。 ~~~ package main import ( "fmt" "strconv" "time" ) // 入口函數main func main() { // 11111: 常規for循環 sum := 0 for i := 0; i < 10; i++ { sum += i } fmt.Println(sum) // 22222: 用for 替代while(i) 語句,如果sum < 1000 則執行循環 sum2 := 1 for sum2 < 1000 { sum2 += sum2 } fmt.Println(sum2) // 33333: 無限循環 couter := 0 for { if couter > 10 { break } fmt.Println("hello " + strconv.FormatInt(int64(couter), 10)) time.Sleep(time.Second) couter++ } // 444444: 遍歷數組或切片 //arr := []int{1, 2, 3} arr := [3]int{1, 2, 3} for index2, value2 := range arr { fmt.Printf("%v=>%v\n", index2, value2) } } ~~~
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