#include <library.h>

ofstream fout;

void make_swap_if()
{ fout << "void swap_if(int & x, int & y)\n";
  fout << "{ if (x > y)\n";
  fout << "  { int temp = x;\n";
  fout << "    x = y;\n";
  fout << "    y = temp; } }\n\n"; }

char variable_name(int n)
{ const string alphabet = "abcdefghijklmnopqrstuvwxyz";
  return alphabet[n - 1]; }

void make_one_swap(int v1, int v2)
{ fout << "swap_if(" << variable_name(v1) << ", "
                     << variable_name(v2) << "); "; }

void make_one_swap_line(int n)
{ fout << "  ";
  int v = 1;
  while (v <= n)
  { make_one_swap(v, v+1);
    v = v + 1; }
  fout << "\n"; }

void main()
{ int num;
  cout << "How many variables to be sorted? ";
  cin >> num;

  fout.open("sorting.cpp");
  fout << "#include <library.h>\n\n";
  make_swap_if();

  fout << "void main()\n";
  fout << "{\n";

  int v = 1;
  while (v <= num)
  { fout << "  int " << variable_name(v) << " = random_in_range(1, 99);\n";
    v = v + 1; }

  v = num - 1;
  while (v >= 1)
  { make_one_swap_line(v);
    v = v - 1; }
  fout << "\n";

  v = 1;
  while (v <= num)
  { fout << "  cout << " << variable_name(v) << " << \" \";\n";
    v = v + 1; }
  fout << "  cout << \"\\n\";\n";

  fout << "}\n\n";
  fout.close(); }