Need help in C language
the number is taken from the keyboard, it is known that it is greater than 10 but less than 1000, so find if there are such consecutive numbers whose sum is equal to that number, if there are more than 1 result print all the results, if no such consecutive numbers sum print nothing,
For Example:15=1+2+3+4+5
15=7+8 and so on...
Please if you can help try to explain in simple way so i could draw the flowchart easily
Thanks
1. ask user to enter the number n
2. check that it is in range [10,1000]
3. find numbers i and k such that sum of numbers i, i+1, i+2, ... i+k-1 will give n
4. print found sequence (for example 15=1+2+3+4+5)
5. repeat Step 3 and 4 till no such sequence is found
All problems in computer science can be solved by another level of indirection,
except for the problem of too many layers of indirection.
– David J. Wheeler
can you explain it in more simple way please and in more details if possibleOriginally Posted by vart
Thank you
Which steps are you having trouble with in vart's list?
how to find such numbers as i and k
Well, there's lots of interesting things about this assignment/homework. Write down lots of ideas on paper without even necessarily trying to find a solution. Experiment with different numbers. See if you can find patterns. Can you work out if there is a maximum sequence length for the given number? Is there a minimum number the first number in the sequence can be? etc etc etc
I've tried, found some ideas but finally I am at the deadlock
Really? vart gave you more than enough information to start. Try applying some effort to understanding his advice.
Unfortunately, no amount of begging helplessly will work here, since this site has a homework policy. The core concept of that policy is that you need to do your own homework.
Math hint: Look at the average of the answers "1+2+3+4+5" and "7+8".
Tim S.
Last edited by stahta01; 10-16-2013 at 06:53 AM.
"...a computer is a stupid machine with the ability to do incredibly smart things, while computer programmers are smart people with the ability to do incredibly stupid things. They are,in short, a perfect match.." Bill Bryson
if you have problem with step 3 - show the code that implements step 1 and 2
All problems in computer science can be solved by another level of indirection,
except for the problem of too many layers of indirection.
– David J. Wheeler
Hatik, i m new to this... so, could you explain me the problem ?? i don't get it... 'The' number is taken from keyboard.. fyn.. whch means 1 number is taken from user.. then "find if there are consecutive numbers"... from where to find ?? give a detailed example..
Thank you
in this example the enters any value that is in the range of 10-1000, it is a known fact,so the program should check if there are such consecutive numbers whose sum is equal to the number taken from user, if yes so print it(also if there are more than two such consecutive sequences print all of them).
So for example : let's say number taken is 15
there are two consecutive sequences such as 1+2+3+4+5=15 and 7+8=15
I hope you understand what i mean
I may misunderstood your question but, for the first two question
Code:int n; scanf("%d", &n); if (n>10 && n<1000) { \\the code } else printf("The number entered is wrong");
well for simplicity "\\the code" should be a call to the function like this
And then you try to implement missing functionsCode:void splitNumber(int n) { int i; for(i=1;i<n;i++) { int k = getSequenceLength(n,i); if(k > 0) printSequence(n,i,k); } }
All problems in computer science can be solved by another level of indirection,
except for the problem of too many layers of indirection.
– David J. Wheeler
I suggest, first, working on printSequence; since you are having issues understanding the function getSequenceLength.
Edit: I would NOT use this function (getSequenceLength) myself. I would write a function that returned i for a given (n,k) instead. I have not decided if 0 or -1 would be used to indicate no answer exists. My function would be getSequenceStart instead of getSequenceLength.
Edit2: The getSequenceLength function seems to be a better fit to the OP problem; but, I see my function code better and depending on whether 15=15 is a valid answer should be easy enough to modify to fit the OP problem.
I really think the OP needs to write out the answer he/she thinks is correct for 15 and for each line place the i and k values.
I would also suggest placing the average for each line; I know this is what gave me my solution to this problem.
Tim S.
Last edited by stahta01; 10-20-2013 at 01:52 PM. Reason: grammar
"...a computer is a stupid machine with the ability to do incredibly smart things, while computer programmers are smart people with the ability to do incredibly stupid things. They are,in short, a perfect match.." Bill Bryson
