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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
                >[success] ## 1)賦值運算符執行順序是從右往左 ``` package main import "fmt" func main() { var s = 10 res := s + 20 fmt.Printf("res = %v",res) } ``` >[danger] 注意:這里程序先會執行 s + 20 然后將結果賦給res <br> <br> >[success] ## 2)賦值運算符的左邊只能是變量 > 右邊可以是,**變量值**,**表達式**,**常量值** ``` package main import "fmt" func test() int{ return 80 } func main() { var s = 10 res := float32(s) + 100 / 25.25 fmt.Println("表達式",res) res1 := test() + 12 fmt.Println("表達式",res1) res2 := 9999 fmt.Println("常量值",res2) } ``` >[info] ## **運行結果:** **表達式 13.960396** **表達式 92** **常量值 9999** <br> <br> >[success]### **面試題:** 有兩個變量,a和b,要求將其進行交換,但是不允許使用中間變量,最終打印結果 ``` package main import "fmt" func test() int{ return 80 } func main() { var a int = 10 var b int = 20 a = a + b b = a - b a = b + b fmt.Printf("a = %v\nb = %v\n",a,b) } ``` >[info] ## 運行結果 `a = 20` `b = 10`
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