#include <string.h>
#include <iostream>
using namespace std;

int main ()
{
    int risultato;
  char str[] = "2+3+4" ;
  char * num1 ;
  int somma;


  cout << "Prova" << "\n" << endl;
  cout <<"Scrivere l'espressione.." << endl;


  cout << "\n" << str << endl;
  num1 = strtok (str,"+");
  somma = somma + (int) num1;
  while (num1 != NULL)
  {

    cout << "\n" << num1 << endl;
    num1 = strtok (NULL, "+");
      somma = somma + (int) num1;

    cout << "\n" << num1 << endl;
      somma = somma + (int) num1;

    num1 = strtok (NULL, "+");
    cout << somma << endl;

  }

return 0;
}