C library function strpbrk()

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#include <iostream>
#include <cstdio>

using namespace std;

int main()
{
   char digits[] = "0123456789";
   char code[] = "ceQasieoLPqa4xz10Iyq";
   char *pos;
   int count = 0;

   pos = strpbrk (code, digits);
   while (pos != NULL)
   {
      pos = strpbrk (pos+1,digits);
      count ++;
   }

   cout << "There are " << count << " numbers in " << code;

   return 0;
}

Output

There are 3 numbers in ceQasieoLPqa4xz10Iyq

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