4.7. Lua while cycle

In Lua programming language, the while loop statement repeatedly executes the loop body statement when the condition is determined to be true .

4.7.1. Grammar #

In Lua programming language while loop syntax:

while(condition)
do
   statements
end

statements (loop body statement) can be one or more statements condition can be any expression, in the condition is true , the loop body statement is executed.

The flow chart is as follows:

In the above flow chart, we can see that in condition (condition) is false skips the current loop and starts the script to execute the statement that follows.

4.7.2. Example #

The following example loops the output a value:

Example #

a=10
while( a < 20 )
do
   print("The value of a is:", a)
   a = a+1
end

Execute the above code, and the output is as follows:

The value of a is: 10
The value of a is: 11
The value of a is: 12
The value of a is: 13
The value of a is: 14
The value of a is: 15
The value of a is: 16
The value of a is: 17
The value of a is: 18
The value of a is: 19