Lua - Logical Operators

Quiz

Following table shows all the logical operators supported by Lua language. Assume variable A holds true and variable B holds false then −

Operator	Description	Example
and	Called Logical AND operator. If both the operands are non zero then condition becomes true.	(A and B) is false.
or	Called Logical OR Operator. If any of the two operands is non zero then condition becomes true.	(A or B) is true.
not	Called Logical NOT Operator. Use to reverses the logical state of its operand. If a condition is true then Logical NOT operator will make false.	!(A and B) is true.

Example - Logical AND Operation

In this example, we're creating two variables a and b and using logical operator we've performed a logical AND operation and printed the result −

main.lua

a = true
b = false

print("a and b = ", (a and b))

Output

When you build and execute the above program, it produces the following result −

a and b =    false

Example - Logical OR Operation

In this example, we're creating two variables a and b and using logical operator we've performed a logical OR operation and printed the result −

main.lua

a = true
b = false

print("a or b = ", (a or b))

Output

When you build and execute the above program, it produces the following result −

a or b =    true

Example - Logical NOT Operation

In this example, we're creating two variables a and b and using logical operator we've performed a logical NOT on logical OR operation and printed the result −

main.lua

a = true
b = false

print("not(a or b) = ", not(a or b))

Output

When you build and execute the above program, it produces the following result −

not(a or b) =    false

lua_operators.htm

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