下表列出了所有Go語言支持的關係運算符。假設變量A=10和變量B=20，則：

運算符	描述	示例
==	檢查兩個操作數的值是否相等，如果是的話那麼條件為真。	(A == B) 不為 true.
!=	檢查兩個操作數的值是否相等，如果值不相等，則條件變為真。	(A != B) 為true.
>	檢查左邊的操作數的值是否大於右操作數的值，如果是的話那麼條件為真。	(A > B) 不為 true.
<	檢查左邊的操作數的值是否小於右操作數的值，如果是的話那麼條件為真。	(A < B) 為 true.
>=	檢查左邊的操作數的值是否大於或等於右操作數的值，如果是的話那麼條件為真。	(A >= B) 不為 true.
<=	檢查左邊的操作數的值是否小於或等於右操作數的值，如果是的話那麼條件為真。	(A <= B) 為 true.

示例

試試下麵的例子就明白了所有的Go編程語言提供的關係運算符：

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" )
   }
}

When you compile and execute the above program it produces the following result:

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