#include <string>
#include <iostream>

using namespace std;

class person
{ public:
    string fname, lname;
    double salary;
    string dept;

  person(string f, string l, double s, string d)
  { fname = f;
    lname = l;
    salary = s;
    dept = d; }

  person()
  { salary = 0.0; }

  void print()
  { cout << fname << " " << lname << ", of " << dept << ", $" << salary << " per year\n"; }
};

const int max_emps = 100;
person employee[max_emps];
int num_emps = 0;

void add_employee(string f, string l, double s, string d)
{ if (num_emps >= max_emps)
  { cerr << "Too many employees, not added\n";
    return; }
  employee[num_emps] = person(f, l, s, d);
  cout << "OK, added " << num_emps << ": ";
  employee[num_emps].print();
  num_emps += 1; }

void list_employees()
{ for (int i = 0; i < num_emps; i += 1)
  { cout << i << ": ";
    employee[i].print(); } }

bool same(string a, string b)   // a case-insensitive string comparison
{ int len = a.length();
  if (len != b.length())
    return false;
  for (int i = 0; i < len; i += 1)
    if (tolower(a[i]) != tolower(b[i]))
      return false;
  return true; }

person find_employee(string wanted)
{ for (int i = 0; i < num_emps; i += 1)
    if (same(employee[i].fname, wanted) ||
        same(employee[i].lname, wanted))
      return employee[i];
  return employee("*", "*", 0.0, "*"); }

int main()
{ add_employee("Mary", "Marlowe", 123456.00, "Management");
  add_employee("Dennis", "Dog", 54321.50, "Design");
  add_employee("Eric", "Earwig", 34567.75, "Engineering");
  add_employee("Tammy", "Teapot", 23500.00, "Tetrahedrons");
  add_employee("Francine", "Frogge", 168742.50, "Management");
  add_employee("Geoffrey", "Georaffe", 21005.99, "Geography");
  add_employee("Lolita", "Lambchop", 25300.00, "Lighting");
  add_employee("Indiana", "Impediment", 1500.00, "Intern");
  add_employee("Germania", "Gastropod", 47299.99, "Geography");
  add_employee("Olivia", "Ointment", 25000000.00, "Owner");
  string cmd;
  while (true)
  { cout << "> ";
    cin >> cmd;

    if (cmd == "list")
      list_employees();

    else if (cmd == "find")
    { string who;
      cin >> who;
      person p = find_employee(who);
      if (p.fname == "*")
        cout << "not found\n";
      else
        p.print(); }

    else if (cmd == "raise")
    { string who;
      double percent;
      cin >> who >> percent;
      person p = find_employee(who);
      if (p.fname == "*")
        cout << "not found\n";
      else
        p.salary *= (1 + percent/100);
      cout << "new salary ";
      p.print(); }             // this has no lasting effect. p contains just
                    // a temporary copy of the data in the array, changing it
                    // has no effect on the original still in the array.

    else if (cmd == "exit")
      break;

    else
      cout << "command '" << cmd << "' not recognised\n"; } }