下表顯示了Lua語言支援的所有算術運算子。 假設變數A=10，變數B=20，然後 -
| 運算子 | 描述 | 範例 |
|---|---|---|
+ |
相加兩個運算元 | A + B = 30 |
- |
從第一個減去第二個運算元 | A - B = -10 |
* |
將兩個運算元相乘 | A * B = 200 |
/ |
用除分子除以分子 | B / A = 2 |
% |
模數運算子，整數除法後的餘數 | B % A = 0 |
^ |
指數運算子取指數冪值 | A^2 = 100 |
- |
一元，充當否定 | -A = -10 |
嘗試以下範例來了解Lua程式設計語言中可用的所有算術運算子 -
a = 21
b = 10
c = a + b
print("Line 1 - Value of c is ", c )
c = a - b
print("Line 2 - Value of c is ", c )
c = a * b
print("Line 3 - Value of c is ", c )
c = a / b
print("Line 4 - Value of c is ", c )
c = a % b
print("Line 5 - Value of c is ", c )
c = a^2
print("Line 6 - Value of c is ", c )
c = -a
print("Line 7 - Value of c is ", c )
執行上述程式時，會產生以下結果 -
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 2.1
Line 5 - Value of c is 1
Line 6 - Value of c is 441
Line 7 - Value of c is -21