#include "library.h"

struct element
{ string symbol, name;
  double atwt; };

bool lookup(string query, element els[], const int size, element & answer)
{ for (int i=0; i<size; i+=1)
  { if (els[i].symbol == query)
    { answer = els[i];
      return true; } }
  return false; }

const string end_of_line = "*****";

string readsymbol()
{ string sym="";
  char c = cin.get();
  while (c==' ')
    c=cin.get();
  if (c=='\n')
    return end_of_line;
  sym += c;
  c = cin.get();
  if (islower(c))
    sym += c;
  else
    cin.unget(); 
  return sym; }

void main()
{ ifstream elf("elements.txt");
  if (elf.fail())
  { cerr << "Can't open file\n";
    exit(1); }
  element table[120];
  int howmany = 0;  
  while (true)
  { elf >> table[howmany].symbol >> table[howmany].name >> table[howmany].atwt;
    if (elf.fail())
      break;
    howmany += 1; }
  elf.close();
  cout << "Read " << howmany << " elements\n";
  while (true)
  { double total = 0.0;
    cout << "> ";
    while (true)
    { string sym = readsymbol();
      if (sym == end_of_line)
        break;   
      element it;
      if (lookup(sym, table, howmany, it)==false)
        cerr << it.symbol << " " << "Not found\n";
      else
      { cout << it.symbol << " " << it.name << " " << it.atwt << "\n";
        total += it.atwt; } }
    cout << "total is " << total << "\n"; } }