C++ Primer 8.4

8.4.cpp

#include <iostream>
using namespace std;
#include <cstring> // for strlen(), strcpy()

struct stringy {
  char * str;
  int ct;
};

void set(stringy & stringy_ref, char * cstring);
void show(stringy & stringy_ref, int times = 1);
void show(const char * cstring, int times = 1);

int main()
{
  stringy beany;
  char testing[] = "Reality isn't what it used to be.";

  set(beany, testing);
  show(beany);
  show(beany, 2);
  testing[0] = 'D';
  testing[1] = 'u';
  show(testing);
  show(testing, 3);
  show("Done!");

  delete [] beany.str;

  return 0;
}

void set(stringy & stringy_ref, char * cstring)
{
  stringy_ref.ct = strlen(cstring);
  stringy_ref.str = new char[stringy_ref.ct + 1];
  strcpy(stringy_ref.str, cstring);
}

void show(stringy & stringy_ref, int times)
{
  for (int i = 0; i < times; i++) {
    cout << stringy_ref.str << endl;
  }
}

void show(const char * cstring, int times)
{
  for (int i = 0; i < times; i++) {
    cout << cstring << endl;
  }
}