Lua if statement
Lua if statement consists of a Boolean expression as a conditional judgment, followed by other statements.
The syntax format of the Lua if statement is as follows:
if(Booleans)
then
--[Statement executed when Boolean expression is true --]
end
When the Boolean expression is true at that time if block of code in is executed, when the Boolean expression is false , follow closelyat the if statement end , the subsequent code will be executed.
Lua believes that false and nil are false, while true and non nil are true. It should be noted that 0 in Lua is true.
The if statement flow chart is as follows:
Example
The following example is used to determine a variable a is the value less than 20:
Example
--[Define variables --]
a = 10;
--[ Using the if statement --]
if( a < 20 )
then
--[ Print the following information when the if condition is true --]
print("A less than 20" );
end
print("The value of a is:", a);
The execution result of the above code is as follows:
A less than 20
The value of a is: 10