The while loop is a very rarely used loop. Because this loop only has a condition where the loop  can be run alone, whereas a more frequently used loop requires something to cause the condition  stop.

Flow Chart

Code Example

void main(){
   var i = 1;
   while(i<=5){
     print(i);
     i++;
   }
}

the result is: 

1
2
3
4
5

Code Explanation

1. is a supporting variable to look for stop conditions.

2. loop condition, if i is less than or equal to 5 then the loop is still running.

3. display data i.

4. increment i.

Of the 4 stages, the loop condition on while is at point number 2.

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