There are at most two types of loops: Entrance Controlled Loops - Once in control, the test condition is checked before entering the loop housing. For Namibia Phone Number List the loop and Although the loop is the input controlled loop. Exit controlled loops When controlling the exit, the test condition is assessed at the end of the loop body. Therefore, the Namibia Phone Number List loop body will be executed at least once, regardless of whether the test condition is correct or incorrect. A do-while loop is an output-controlled loop.