#include "library.h"

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

void print(element e)
{ cout << e.symbol << ", " << e.name << ", number = " << e.atno
       << ", atomic weight = " << e.atwt << "\n"; }

void main()
{ element table[110];
  ifstream fi("table.txt");
  int n = 1;
  while (true)
  { string sym, name;
    double wt;
    fi >> sym >> name >> wt;
    if (fi.fail())
      break;
    cout << n << " " << sym << " " << name << " " << wt << "\n";
    table[n].symbol = sym;
    table[n].name = name;
    table[n].atno = n;
    table[n].atwt = wt;
    n += 1; }
  n -= 1;
  fi.close();
  cout << n << " elements read\n";
  cout << "Enter -1 to stop - ";
  while (true)
  { int a;
    cout << "Enter atomic number: ";
    cin >> a;
    if (a == -1)
      break;
    if (a < 1 || a > n)
    { cout << "bad number\n";
      continue; }
    print(table[a]); }
  cout << "Bye then.\n"; }