I'm stuck on this question.?

Question

a) How many times does the following loop iterate?

b) What is the output displayed on screen?

int x = 8;

while (x < 12)
++x ;
Console.Write(x);

Answer 1

The loop iterate 4 times.
Output is 12.

if there where { }braces after the while statements and the following code inside
{
++X;
Console.Write(X);
}
You would have gotten different output.

Since you are "Stuck" on this question I would recommend reading a good C++ book.

Answer 2

x starts a 8 and the loop runs while x < 12. The output is:

9
10
11

Answer 3

They key to understanding this is to know that the "while loop" doesn't execute when x=12. Because with a while statement the expression is evaluated first.

Some other loops will execute first, and then check the expression

4 times, 12 as the output

Answer 4

while (x < 12)
{
console.write(x)
++x ;
}

I would open up my compiler, but I'm a little lazy. This code should answer your question though. I'm pretty sure it's just 4.