"successive missing page" program, who can solve?

[frex80i]

I have a question about my subject, Borland C programming..

a book is missing successive pages. the sum of these pages is the input, and the program determines which pages are missing (the pages are successive).
for instance;
the sum of missing pages is 15, so there are several answer:
- pages 1...2...3...4...5 (1+2+3+4+5 = 15)
- pages 4...5...6 (4+5+6 = 15)
- pages 7...8 (7+8 = 15)
- and page 15 its self,

but, the program takes the first answers for output.

I need some explanation about loop.
thx,

[sicarie]

What sort of loop were you wanting an explanation of?

[frex80i]

what about if I use while... it seems easier I think

[Roonie]

well, you can use any loop for any solution, so its a combination of personal preference and ease of coding that makes the decision.

why dont you try using a for loop that counts down . . . inside the loop try subtracting from the input to see if you can get a successive string of subtraction operations to work. then start the loop over again with a smaller number as its starting point.