What do you mean by check?

Answer 1

A loop check is a condition that is checked everytime a loop is executed. It is usually the condition that needs to match for the loop to terminate. Until this condition is matched the loop will continue to execute.

Ex: for(int i=0; i<10; i++) {

…

}

In the above for loop "i<10" is the loop check condition and this loop will execute until the value of i is less than 10. It starts at 0 and gets incremented by 1 everytime the loop completes an iteration of execution