Thread: A problem with loops and Stringstreams

  1. #1
    Registered User
    Join Date
    Mar 2009

    A problem with loops and Stringstreams

    Hi, I have the following code:

        ostringstream temp;
        for(int i=2; i<x; i++)
                if((x%i)==0) {
                             temp << i ;
                             output += temp.str(); 

    It is designed to factorise the number x and display all the factors in the variable 'output'.

    But there is a trouble. Say 12 was the number for instance.

    You would expect output (which is a string btw) to equal "2346". Instead it equals

    "2 23 234 2346" without the spaces (I added them for clarity). Is there a way that I can get the effect that I want.

    Thanks in advance,

  2. #2
    The larch
    Join Date
    May 2006
    Don't add the contents of the stringstream (which keeps growing) to the output string at each iteration?
    I might be wrong.

    Thank you, anon. You sure know how to recognize different types of trees from quite a long way away.
    Quoted more than 1000 times (I hope).

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