// This ugly program is func.cpp, for CS11 lab 3.
// The purpose of this program is to get practice in tracing through
// a program with all of its function calls, some of which look similar.

#include <iostream.h>

void a();
void b();
void c();
void d();

int main()
{
  a();
  cout << endl;
  b();
  cout << endl;
  c();
  cout << endl;
  d();

  return 0;
}

void a()
{
  d();
  cout << "a";
  b();
}

void b()
{
  cout << "b";
  d();
}

void c()
{
  a();
  d();
  cout << "c";
}

void d()
{
  cout << "d";
}