下表显示了Go语言支持的所有关系运算符。假设变量 A 的值为 10，变量 B 的值为 20，则：
| 运算符 | 描述 | 示例 |
|---|---|---|
== |
检查两个操作数的值是否相等，如果相等，则条件为真。 | (A == B)结果为假 |
!= |
检查两个操作数的值是否相等，如果值不相等，则条件为真。 | (A != B)结果为真 |
> |
检查左操作数的值是否大于右操作数的值，如果是，则条件为真。 | (A > B)结果为假 |
< |
检查左操作数的值是否小于右操作数的值，如果是，则条件为真。 | (A < B)结果为真 |
>= |
检查左操作数的值是否大于或等于右操作数的值，如果是，则条件为真。 | (A >= B)结果为假 |
<= |
检查左操作数的值是否小于或等于右操作数的值，如果是，则条件为真。 | (A <= B)结果为真 |
示例
尝试以下示例来了解Go编程语言中提供的所有关系运算符：
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" )
}
}
当编译和执行上面程序，它产生以下结果：
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