Go 关系操作符
下表列出了Go语言支持的所有关系操作符。假设变量 A 值为10,变量 B 值为20,则−
操作符 | 描述 | 示例 |
---|---|---|
== |
检查两个操作数的值是否相等;如果是,则条件成立。 | (A == B) 不成立。 |
!= |
检查两个操作数的值是否不相等;如果不相等,则条件成立。 | (A != B) 成立。 |
> |
检查左操作数的值是否大于右操作数的值;如果是,则条件成立。 | (A > B) 不成立。 |
< |
检查左操作数的值是否小于右操作数的值;如果是,则条件成立。 | (A < B) 成立。 |
>= |
检查左操作数的值是否大于或等于右操作数的值;如果是,则条件成立。 | (A >= B) 不成立。 |
<= |
检查左操作数的值是否小于或等于右操作数的值;如果是,则条件成立。 | (A <= B) 成立。 |
示例
尝试以下示例,以了解Go编程语言中可用的所有关系运算符:
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" )
}
}
当你编译并执行上述程序时,它会产生以下结果 −
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