smart selection of arrays

Hi,
I have a string of alphanumeric characters.Iwant to access alphabets in character array and numerals in an int array, simultaneously.how should i go ahead.
thanxxxxxxxx

I'm afraid I don't understand your problem description. Can you elaborate?

Code:

---

if( isdigit(alphanumstring[index]) )
{
    // choose numeric array
}
else if ( isalpha(alphanumstring[index]) )
{
    //choose alpha array
}
else
{
    //not alpha or numeric ... do something else
}

---

I think that he wants to break the string into two arrays, one with chars and the other with int.

Code:

---

#include <algorithm>
#include <functional>
#include <string>
#include <vector>
#include <ctype>

//inside a function:
string mixedString;

//fill mixed string with data

vector<int> integerArray;
vector<char> characterArray;

//put all digits at the end
string::iterator pos=remove_if(mixedString.begin(), mixedString.end(), ptr_fun(isdigit) );

//copy the digits to int array
copy(pos, mixedString.end(),back_insert_iterator(integerArray));

//convert ascii digits to numbers
for_each(integerArray.begin(), integerArray.end(), bind2nd(minus<char>(),'0'));

//copy the non numbers to the character array.
copy(mixedString.begin(),pos,back_insert_iterator(characterArray));

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