// A7.cpp - explicit construction of function parameter

#include <iostream>
using namespace std;

class X { 
  public: 
    explicit X(const char *s) { val = s; }
    string& value() { return val; }
    void aFunction(const X &x) const {
      cout << "\n  internal string = \"" << val.c_str() << "\"";
      const string temp = x.val;
      cout << "\n  argument string = \"" << temp.c_str() << "\"";
    }
  private:
    string val;
};

void main() {

  X x("internal string");

/////////////////////////////////////////////////////////////////////
//  This won't compile because implicit conversions are not allowed.
//  x.aFunction("this is an argument string");

  x.aFunction(X("this is an argument string"));

  cout << "\n\n";
}