Thread: smart selection of arrays

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
}

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));