Go - 關係運算符

下表列出了 Go 語言支援的所有關係運算符。假設變數A 為 10，變數B 為 20，則 -

運算子	描述	示例
==	檢查兩個運算元的值是否相等；如果相等，則條件為真。	(A == B) 不為真。
!=	檢查兩個運算元的值是否相等；如果值不相等，則條件為真。	(A != B) 為真。
>	檢查左運算元的值是否大於右運算元的值；如果大於，則條件為真。	(A > B) 不為真。
<	檢查左運算元的值是否小於右運算元的值；如果小於，則條件為真。	(A < B) 為真。
>=	檢查左運算元的值是否大於或等於右運算元的值；如果大於或等於，則條件為真。	(A >= B) 不為真。
<=	檢查左運算元的值是否小於或等於右運算元的值；如果小於或等於，則條件為真。	(A <= B) 為真。

示例

嘗試以下示例以瞭解 Go 程式語言中可用的所有關係運算符 -

線上演示

package main

import "fmt"

func main() {
   var a int = 21
   var b int = 10

   if( a == b ) {
      fmt.Printf("Line 1 - a is equal to b\n" )
   } else {
      fmt.Printf("Line 1 - a is not equal to b\n" )
   }
   if ( a < b ) {
      fmt.Printf("Line 2 - a is less than b\n" )
   } else {
      fmt.Printf("Line 2 - a is not less than b\n" )
   } 
   if ( a > b ) {
      fmt.Printf("Line 3 - a is greater than b\n" )
   } else {
      fmt.Printf("Line 3 - a is not greater than b\n" )
   }
   
   /* Lets change value of a and b */
   a = 5
   b = 20
   if ( a <= b ) {
      fmt.Printf("Line 4 - a is either less than or equal to  b\n" )
   }
   if ( b >= a ) {
      fmt.Printf("Line 5 - b is either greater than  or equal to b\n" )
   }
}

編譯並執行上述程式時，會產生以下結果 -

Line 1 - a is not equal to b
Line 2 - a is not less than b
Line 3 - a is greater than b
Line 4 - a is either less than or equal to  b
Line 5 - b is either greater than  or equal to b

go_operators.htm

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