下表顯示了Go語言支援的所有算術運算子。假設變數 A 的值為 10，變數 B 的值為 20，則：
| 運算子 | 描述 | 範例 |
|---|---|---|
+ |
新增兩個運算元 | A + B = 30 |
- |
從第一個運算元中減去第二個運算元 | A - B = 10 |
* |
將兩個運算元相乘 | A * B = 200 |
/ |
將分子除以分母 | B / A = 2 |
% |
模數運算子，以及整數除法的餘數 | B % A = 0 |
++ |
增加(遞增)運算子，將整數值加一 | A++ = 11 |
-- |
相減(遞減)運算子，將整數值減一 | A— = 9 |
嘗試以下範例來了解Go程式設計語言中的所有算術運算子：
package main
import "fmt"
func main() {
var a int = 21
var b int = 10
var c int
c = a + b
fmt.Printf("Line 1 - Value of c is %d\n", c )
c = a - b
fmt.Printf("Line 2 - Value of c is %d\n", c )
c = a * b
fmt.Printf("Line 3 - Value of c is %d\n", c )
c = a / b
fmt.Printf("Line 4 - Value of c is %d\n", c )
c = a % b
fmt.Printf("Line 5 - Value of c is %d\n", c )
a++
fmt.Printf("Line 6 - Value of a is %d\n", a )
a--
fmt.Printf("Line 7 - Value of a is %d\n", a )
}
當編譯和執行上述程式時，它產生以下結果：
Line 1 - Value of c is 31
Line 2 - Value of c is 11
Line 3 - Value of c is 210
Line 4 - Value of c is 2
Line 5 - Value of c is 1
Line 6 - Value of a is 22
Line 7 - Value of a is 21