Consider the following loop?

Question

Consider the following loop with the indicated assertions. What is the value or range of values for X at points A and B in the program? Assume that the initial value of X is less than or equal to 86 so that we enter the loop.

while (X<=86)

{X<=86}
X=X+7

{A:________________________}
{B:_________________________}

this is an example problem. i need to know how it works because i have a smiliar problem. getting the answer is useless without an explanation.

Answer 1

Well, X can leave the loop equaling as much as 86 = 86+7, so X can leave the loop equaling as much as 93.

Assuming X must be greater than or equal to zero, the lowest X could be is 0 = 0 + 7, so 7.

Answer 2

The codes doesn't makes sense but here's a try.

Assuming X <= 86 when you enter the loop.
You could execute 0 times-- e.g. X=86 when you hit the while loop
If it is < 86, it will execute until X is 86 or when it is 86+7 or 93.

It would make more sense if it looked like this....

x = some value

while( x<=86)
x=x+7

Answer 3

wow I wish I had stuff like this when I was going to school.. do your own homework it will help you in the long run

Answer 4

Are you trying to get "US" to do your homework??