Arithmetic Operators in Lua

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Following table shows all the arithmetic operators supported by Lua language. Assume variable A holds 10 and variable B holds 20, then:

OperatorDescriptionExample
+Adds two operands A + B will give 30
-Subtracts second operand from the first A - B will give -10
*Multiply both operands A * B will give 200
/Divide numerator by de-numerator B / A will give 2
%Modulus Operator and remainder of after an integer division B % A will give 0
^Exponent Operator takes the exponents A^2 will give 100
-Unary - operator acts as negation -A will give -10

Example

Try the following example to understand all the arithmetic operators available in Lua programming language:

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 )

When you execute the above program, it produces the following result:

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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