下表顯示了Go語言支持的所有關係運算符。假設變數 A 的值為 10，變數 B 的值為 20，則：
| 運算符 | 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)結果為假 |
!= |
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)結果為真 |
> |
檢查左運算元的值是否大於右運算元的值，如果是，則條件為真。 | (A > B)結果為假 |
< |
檢查左運算元的值是否小於右運算元的值，如果是，則條件為真。 | (A < B)結果為真 |
>= |
檢查左運算元的值是否大於或等於右運算元的值，如果是，則條件為真。 | (A >= B)結果為假 |
<= |
檢查左運算元的值是否小於或等於右運算元的值，如果是，則條件為真。 | (A <= B)結果為真 |
示例
嘗試以下示例來瞭解Go編程語言中提供的所有關係運算符：
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" )
}
}
當編譯和執行上面程式，它產生以下結果：
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