#include <iostream>
using namespace std;
int main() {
string c1 = "ABDCDBBED";
string c2 = "ADDCBDDED";
int c = 0,talla,i;
talla = c1.length();
for (i=0; i<talla; i++)
if (c1[i] == c2[i])
c++;
cout << "Tiene " << c << " letras iguales" << endl;
return 0;
}