#include <iostream>
#include <fstream>
#include <string>

using namespace std;

struct element
{ int atno;
  string name, sym;
  double atwt; };

int read_table(element table[], int maxe)
{ ifstream ef("/home/www/class/een118/a3010b.txt");
  if (ef.fail())
  { cout << "Can't read file\n";
    exit(1); }
  table[0].sym = "XXX";
  table[0].name = "Doesn'texistium";
  table[0].atno = 0;
  table[0].atwt = -451;
  int i = 0;
  while (i < maxe-1)
  { ef >> table[i+1].sym >> table[i+1].name >> table[i+1].atwt;
    if (ef.fail())
      break;
    i += 1;
    table[i].atno = i; }
  ef.close();
  return i; }

element lookup(string sy, element table[], int num)
{ for (int i = 1; i <= num; i += 1)
    if (sy == table[i].sym)
      return table[i]; 
  return table[0]; }


struct inputgetter
{ string formula;
  int pos; };

void reset(inputgetter & ig, string newf)
{ ig.formula = newf;
  ig.pos = 0; }

char shownext(inputgetter ig)
{ if (ig.pos >= ig.formula.length())
    return '\n';
  return ig.formula[ig.pos]; }

void moveup(inputgetter & ig)
{ ig.pos += 1; }


int main()
{ const int max_elements = 120;
  element table[max_elements];
  int num_els = read_table(table, max_elements);
  while (true)
  { string x;
    inputgetter in;
    reset(in, x);

    while (true)
    { string sym = "";
      char c1 = shownext(in);
      if (c1 == '\n')
        break;
      sym += c1;
      moveup(in);
      if (c1 >= 'A' && c1 <= 'Z')
      { char c2 = shownext(in);
        if (c2 >= 'a' && c2 <= 'z')
        { moveup(in);
          sym += c2; } }

      cout << "symbol read: '" << sym << "'\n";
      element r = lookup(sym, table, num_els);
      cout << r.atno << " " <<
              r.sym << " " <<
              r.name << " " <<
              r.atwt << "\n";
      if (r.atno == 0)
        cout << "Bad symbol '" << x << "'\n"; } } }