下表列出了所有的lua语言支持的算术运算符。假设变量a持有10和变量b持有20,则:
例子
试试下面的例子就明白了所有的lua编程语言提供了算术运算符:
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 )
当执行上面的程序,它会产生以下结果:
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
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