<P> The while construct consists of a block of code and a condition / expression . The condition / expression is evaluated , and if the condition / expression is true , the code within the block is executed . This repeats until the condition / expression becomes false . Because the while loop checks the condition / expression before the block is executed , the control structure is often also known as a pre-test loop . Compare this with the do while loop , which tests the condition / expression after the loop has executed . </P>
<P> The while construct consists of a block of code and a condition / expression . The condition / expression is evaluated , and if the condition / expression is true , the code within the block is executed . This repeats until the condition / expression becomes false . Because the while loop checks the condition / expression before the block is executed , the control structure is often also known as a pre-test loop . Compare this with the do while loop , which tests the condition / expression after the loop has executed . </P>
the while loop is this type of loop
the while loop is this type of loop
pre-test loop
pre-test loop