Stringstream not working in loop

[tfcoder]

In the attached for loop: the first iteration works well, but for the second iteration the number ends up with 0 in it. strinfocus gets the right value, so I'm guessing numstring needs to be prepped up in some way the second time the loop body is entered?

int number;
string strinfocus;
stringstream numstring;
for(int i = 0; i <= stream.length() - 5; i++)
    {
	strinfocus = stream.substr(i, 5);
	//numstring.str("");
	numstring << strinfocus;
	numstring >> number;
	...
    }

[guestgulkan]

Probably need numstring.clear();

int number;
string strinfocus;
stringstream numstring;
for(int i = 0; i <= stream.length() - 5; i++)
    {
	strinfocus = stream.substr(i, 5);
	//numstring.str("");
	numstring << strinfocus;
	numstring >> number;

	...

        numstring.clear(); //somewhere about here?? before using it again
    }

[Galik]

What data does stream contain?

[tfcoder]

Thank you, guestgulkan's suggestion works!

Galik, I am trying to solve problem 8 from www.projecteuler.net http://projecteuler.net/index.php?section=problems&id=8 Variable stream has the 1000 digits.

Problem: Find the greatest product of five consecutive digits in the 1000-digit number.

73167176531330624919225119674426574742355349194934
96983520312774506326239578318016984801869478851843
85861560789112949495459501737958331952853208805511
12540698747158523863050715693290963295227443043557
66896648950445244523161731856403098711121722383113
62229893423380308135336276614282806444486645238749
30358907296290491560440772390713810515859307960866
70172427121883998797908792274921901699720888093776
65727333001053367881220235421809751254540594752243
52584907711670556013604839586446706324415722155397
53697817977846174064955149290862569321978468622482
83972241375657056057490261407972968652414535100474
82166370484403199890008895243450658541227588666881
16427171479924442928230863465674813919123162824586
17866458359124566529476545682848912883142607690042
24219022671055626321111109370544217506941658960408
07198403850962455444362981230987879927244284909188
84580156166097919133875499200524063689912560717606
05886116467109405077541002256983155200055935729725
71636269561882670428252483600823257530420752963450