Anagrams

Does not compile, please advise.  Del

class Ana {

public:

      Ana(){};
      ~Ana(){};
      int getArraySize(char []);
      void printAnagrams ( char [], int );

private:

      char str[256];
      char *nWord;
      int Counter = 0;

};

#endif

*******************


// ana.cpp
// Sheet 2

#include<iostream>
#include<cctype>
#include<string>
#include "ana.h"

using namespace std;

int Ana::getArraySize(char a[]) {
 
  int sz = 0;
  int x = 0;

  do {
   
      x = a[sz];
      sz++;
  }
  while(x != 0);
    sz-=1;

  return (sz);

}

void Ana::printAnagrams ( char a[], int len ) {

  if(len <= 1) {
   
    nWord = a;
    cout << nWord << endl;
    Counter++;
     
  }
  else {
   
    int i;
    char temp;

    for (i = 0; i < len; i++) {
     
      temp = a[i];
      a[i] = a[len-1];
      a[len-1] = temp;

      printAnagrams(a, len-1);

      temp = a[i];
      a[i] = a[len-1];
      a[len-1] = temp;
     
    }
   
  }

}
#include "ana.h"
int main() {

  Ana = a;
 
  cout <<"Enter Word: ";
  cin >> str;
  cout << endl;
  int Len = getArraySize(str);

  a.printAnagrams(str,Len);
  cout << endl << Counter <<" Anagrams";
  cout<< endl;

  return 0;
  system("pause");

}

Output:

In file included from ana.cpp:8:
ana.h:29: error: ISO C++ forbids initialization of member `Counter'
ana.h:29: error: making `Counter' static
ana.h:29: error: ISO C++ forbids in-class initialization of non-const static
   member `Counter'
ana.cpp: In function `int main()':
ana.cpp:63: error: parse error before `=' token
ana.cpp:66: error: `str' undeclared (first use this function)
ana.cpp:66: error: (Each undeclared identifier is reported only once for each
   function it appears in.)
ana.cpp:68: error: `getArraySize' undeclared (first use this function)
ana.cpp:70: error: `a' undeclared (first use this function)
ana.cpp:71: error: `Counter' undeclared (first use this function)