Answer:
count is: 1
count is: 3
count is: 5 after printing this, count is incremented by two and becomes 7
Done counting by two's.
count is: 1
count is: 3
count is: 5 after printing this, count is incremented by two and becomes 7
Done counting by two's.
The loop control variable count
does not need to hit the limit exactly :
while ( count <= 6 )
In the above, the value 5 passed the test
and the loop body executed.
Then count was incremented to 7.
Then 7 failed the test.
The condition part of a while is like a gatekeeper.
It checks if execution is to be admitted into the loop body.
It doesn't care how things came to be; if the test yields false,
the loop body is skipped.
This is shown in the flowchart. Execution flows along the lines in the direction of the arrows. The diamond marked "Test Condition" represents the gatekeeper. If the condition tests true, execution enters the loop body. If the condition tests false, execution is not allowed into the loop body.
When the loop body is executed variables and other things are changed. Execution then returns to the top of the loop, where the gatekeeper again decides whether to let it enter the loop body.
Say that the test condition is count <= 6 and that there
are many statements in the loop body.
If one of the statements in the middle of the loop body changes count to
12, does the loop body immediately stop execution?
(Hint: look at the flow chart.)