Just skimmed through it and I have a major problem.
You are wrong in stating that list, map and set are keywords; they are STL containers.

It pains me to see such fundamental errors from a tutorial.

In modern C++ (C++11) lambdas are the best way of applying predicates to STL algorithms. Unlike function pointers and function objects you can write your logic in place and unlike functions pointers the code will be inlined.

Consider this example using std::count_if:

int x [] = {3, 9, 11, 14, 7};
//return the number of elements in x which are greater than 5 and less than 10
auto test_count = std::count_if(std::begin(x), std::end(x), [] (int a) {return a > 5 && a < 10;});

It's just so easy. The STL algorithms become a factor of ten more usable (at least) with lambdas.

ok built it and got 2 errors, 67 successes and 1 sipped, my two errors are

Error	58	error c101008d: Failed to write the updated manifest to the resource of file "../test/labeld.exe". The operation failed.	C:\flt\fltk-1.1.10\vc2005\mt.exe	label
Error	15	error LNK1181: cannot open input file 'fltkd.lib'	C:\flt\fltk-1.1.10\vc2005\LINK	line_style

I don't know the importance of a manifest, or if it even matters but for the fltkd.lib error, am i supposed to link the lib found in "../lib"?
I don't really see what's been skipped either. I'm stumped.

Thanks

So for a class I'm doing (don't worry, it's extra credit for a Chemistry class, not a coding class), I'm making a program that calculates atomic mass based on the user inputting the symbols and amounts of each element involved in the molecule.

As an example, if the molecule that the user wants the atomic mass of is H2O, then I want them to be able to input "H" into the program, and "2" for the amount, and "O" and "1". The program is then supposed to go through the map I've created and find those values and calculate the mass and spit it out.

Firstly, I want to know if this is possible? Secondly, can you show me what to do, based on the code I have here:

#include <iostream>
#include <string>
#include <map>
using namespace std;
struct ElementInfo
{
    std::string el_symbol;
    double el_mass;
    int el_number;

    ElementInfo( const std::string& name = "", 
                         int number = 0,
                         double weight = 0) : el_symbol(name),
                         el_mass(weight), el_number(number) {}
};

typedef std::map<int, ElementInfo> PeriodicTable;

enum { H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, I, Xe, Cs, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po, At, Rn, Fr, Ra, Ac, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Lr, Rf, Db, Sg, Bh, Hs, Mt, Uun, Uuu, Uub, Uuq };

void InitializePeriodicTable( PeriodicTable& theTable)
{
     theTable[H] = ElementInfo("H", 1, 1.0079);
     theTable[He] = ElementInfo("He", 2, 4.0026);
     theTable[Li] = ElementInfo("Li", 3, 6.941);
     theTable[Be] = ElementInfo("Be", 4, 9.0122);
     theTable[B] = ElementInfo("B", 5, 10.811);
     theTable[C] = ElementInfo("C", 6, 12.011);
     theTable[N] = ElementInfo("N", 7, 14.007);
     theTable[O] = ElementInfo("O", 8, 15.999);
     theTable[F] = ElementInfo("F", 9, 18.998);
     theTable[Ne] = ElementInfo("Ne", 10, 20.180);
     theTable[Na] = ElementInfo("Na", 11, 22.990);
     theTable[Mg] = ElementInfo("Mg", 12, 24.305);
     theTable[Al] = ElementInfo("Al", 13, 26.982);
     theTable[Si] = ElementInfo("Si", 14, 28.086);
     theTable[P] = ElementInfo("P", 15, 30.974);
     theTable[S] = ElementInfo("S", 16, 32.065);
     theTable[Cl] = ElementInfo("Cl", 17, 35.453);
     theTable[Ar] = ElementInfo("Ar", 18, 39.948);
     theTable[K] = ElementInfo("K", 19, 39.098);
     theTable[Ca] = ElementInfo("Ca", 20, 40.078);
     theTable[Sc] = ElementInfo("Sc", 21, 44.956);
     theTable[Ti] = ElementInfo("Ti", 22, 47.867);
     theTable[V] = ElementInfo("V", 23, 50.942);
     theTable[Cr] = ElementInfo("Cr", 24, 51.996);
     theTable[Mn] = ElementInfo("Mn", 25, 54.938);
     theTable[Fe] = ElementInfo("Fe", 26, 55.845);
     theTable[Co] = ElementInfo("Co", 27, 58.933);
     theTable[Ni] = ElementInfo("Ni", 28, 58.693);
     theTable[Cu] = ElementInfo("Cu", 29, 63.546);
     theTable[Zn] = ElementInfo("Zn", 30, 65.39);
     theTable[Ga] = ElementInfo("Ga", 31, 69.723);
     theTable[Ge] = ElementInfo("Ge", 32, 72.61);
     theTable[As] = ElementInfo("As", 33, 74.992);
     theTable[Se] = ElementInfo("Se", 34, 78.96);
     theTable[Br] = ElementInfo("Br", 35, 79.904);
     theTable[Kr] = ElementInfo("Kr", 36, 83.80);
     theTable[Rb] = ElementInfo("Rb", 37, 85.468);
     theTable[Sr] = ElementInfo("Sr", 38, 87.62);
     theTable[Y] = ElementInfo("Y", 39, 88.906);
     theTable[Zr] = ElementInfo("Zr", 40, 91.224);
     theTable[Nb] = ElementInfo("Nb", 41, 92.906);
     theTable[Mo] = ElementInfo("Mo", 42, 95.94);
     theTable[Tc] = ElementInfo("Tc", 43, 98.0);
     theTable[Ru] = ElementInfo("Ru", 44, 101.07);
     theTable[Rh] = ElementInfo("Rh", 45, 102.91);
     theTable[Pd] = ElementInfo("Pd", 46, 106.42);
     theTable[Ag] = ElementInfo("Ag", 47, 107.87);
     theTable[Cd] = ElementInfo("Cd", 48, 112.41);
     theTable[In] = ElementInfo("In", 49, 114.82);
     theTable[Sn] = ElementInfo("Sn", 50, 118.71);
     theTable[Sb] = ElementInfo("Sb", 51, 121.76);
     theTable[Te] = ElementInfo("Te", 52, 127.60);
     theTable[I] = ElementInfo("I", 53, 126.90);
     theTable[Xe] = ElementInfo("Xe", 54, 131.29);
     theTable[Cs] = ElementInfo("Cs", 55, 132.91);
     theTable[Ba] = ElementInfo("Ba", 56, 137.33);
     theTable[La] = ElementInfo("La", 57, 138.91);
     theTable[Ce] = ElementInfo("Ce", 58, 140.12);
     theTable[Pr] = ElementInfo("Pr", 59, 140.91);
     theTable[Nd] = ElementInfo("Nd", 60, 144.24);
     theTable[Pm] = ElementInfo("Pm", 61, 145.0);
     theTable[Sm] = ElementInfo("Sm", 62, 150.36);
     theTable[Eu] = ElementInfo("Eu", 63, 151.96);
     theTable[Gd] = ElementInfo("Gd", 64, 157.25);
     theTable[Tb] = ElementInfo("Tb", 65, 158.93);
     theTable[Dy] = ElementInfo("Dy", 66, 162.50);
     theTable[Ho] = ElementInfo("Ho", 67, 164.93);
     theTable[Er] = ElementInfo("Er", 68, 167.26);
     theTable[Tm] = ElementInfo("Tm", 69, 168.93);
     theTable[Yb] = ElementInfo("Yb", 70, 173.04);
     theTable[Lu] = ElementInfo("Lu", 71, 174.97);
     theTable[Hf] = ElementInfo("Hf", 72, 178.49);
     theTable[Ta] = ElementInfo("Ta", 73, 180.95);
     theTable[W] = ElementInfo("W", 74, 183.84);
     theTable[Re] = ElementInfo("Re", 75, 186.21);
     theTable[Os] = ElementInfo("Os", 76, 190.23);
     theTable[Ir] = ElementInfo("Ir", 77, 192.22);
     theTable[Pt] = ElementInfo("Pt", 78, 195.08);
     theTable[Au] = ElementInfo("Au", 79, 196.97);
     theTable[Hg] = ElementInfo("Hg", 80, 200.59);
     theTable[Tl] = ElementInfo("Tl", 81, 204.38);
     theTable[Pb] = ElementInfo("Pb", 82, 207.2);
     theTable[Bi] = ElementInfo("Bi", 83, 208.98);
     theTable[Po] = ElementInfo("Po", 84, 209.0);
     theTable[At] = ElementInfo("At", 85, 210.0);
     theTable[Rn] = ElementInfo("Rn", 86, 222.0);
     theTable[Fr] = ElementInfo("Fr", 87, 223.0);
     theTable[Ra] = ElementInfo("Ra", 88, 226.0);
     theTable[Ac] = ElementInfo("Ac", 89, 227.0);
     theTable[Th] = ElementInfo("Tc", 90, 232.04);
     theTable[Pa] = ElementInfo("Pa", 91, 231.04);
     theTable[U] = ElementInfo("U", 92, 238.03);
     theTable[Np] = ElementInfo("Np", 93, 237.0);
     theTable[Pu] = ElementInfo("Pu", 94, 244.0);
     theTable[Am] = ElementInfo("Am", 95, 143.0);
     theTable[Cm] = ElementInfo("Cm", 96, 247.0);
     theTable[Bk] = ElementInfo("Bk", 97, 247.0);
     theTable[Cf] = ElementInfo("Cf", 98, 251.0);
     theTable[Es] = ElementInfo("Es", 99, 252.0);
     theTable[Fm] = ElementInfo("Fm", 100, 257.0);
     theTable[Md] = ElementInfo("Md", 101, 258.0);
     theTable[No] = ElementInfo("No", 102, 259.0);
     theTable[Lr] = ElementInfo("Lr", 103, 262.0);
     theTable[Rf] = ElementInfo("Rf", 104, 261.0);
     theTable[Db] = ElementInfo("Db", 105, 262.0);
     theTable[Sg] = ElementInfo("Sg", 106, 266.0);
     theTable[Bh] = ElementInfo("Bh", 107, 264.0);
     theTable[Hs] = ElementInfo("Hs", 108, 269.0);
     theTable[Mt] = ElementInfo("Mt", 109, 268.0);
     theTable[Uun] = ElementInfo("Uun", 110, 271.0);
     theTable[Uuu] = ElementInfo("Uuu", 111, 272.0);
     theTable[Uub] = ElementInfo("Uub", 112, 277.0);
     theTable[Uuq] = ElementInfo("Uuq", 113, 289.0);
     
}
int main()
{
    PeriodicTable myTable;
    InitializePeriodicTable( myTable );
    
    int chemchoice, choicetwo;
    double choice, mass, grams, moles, atoms, x, molesk, ratio, molesu, massu, final;
    
    cout<<"\tChemistry Calculator 1.0\n\n";
    cout<<"---------------------------------------------------------------------\n";
    cout<<"1 - Mole/Gram/Atom Calculator\n";
    cout<<"2 - Stoichiometry Calculator\n";
    cout<<"---------------------------------------------------------------------\n";
    cout<<"\nPlease type in your choice (1 or 2). To find out more information about either \n";
    cout<<"choice, type 3: ";
    cin>>chemchoice;
    
    system("cls");
    switch (chemchoice)
    {
           case 1:
                cout<<"\t\n\n\nMoles -- Grams -- Atoms Converter\n\n\n";
 	cout<<"There is a list of choices below:\n\n";
 	cout<<"1 - Grams to Moles\n";
 	cout<<"2 - Grams to Atoms\n";
 	cout<<"3 - Moles to Grams\n";
 	cout<<"4 - Moles to Atoms\n";
 	cout<<"5 - Atoms to Moles\n";
 	cout<<"6 - Atoms to Grams\n";
 	cout<<"\nPlease enter the number of your choice: ";
 	cin>>choice;
 	
 	if (choice == 1)
 	{
		   		cout<<"\n\nPlease enter the atomic mass of the atom: ";
		   		cin>>mass;
		   		cout<<"\nPlease enter the number of grams of the atom: ";
		   		cin>>grams;
		   		moles = grams / mass;
		   		cout<<"\n\nThe number of moles of this atom is: "<<moles<<"\n\n\n";
				}
     else if (choice == 2)
     {
		   		cout<<"\n\nPlesase enter the grams of the atom: ";
		   		cin>>grams;
		   		cout<<"\nPease enter the atomic mass of the atom: ";
		   		cin>>mass;
		   		x = grams/mass;
		   		atoms = x * 6.022e+23;
		   		cout<<"\n\nThe number of atoms is: "<<atoms<<"\n\n\n";
				}
     else if (choice == 3)
     {
 		 cout<<"\n\nPlease enter the atomic mass of the atom: ";
 		 cin>>mass;
 		 cout<<"\nPlease enter the number of moles of the atom: ";
 		 cin>>moles;
 		 grams = moles*mass;
 		 cout<<"\n\nThe number of grams of the atom is "<<grams<<"\n\n\n";
		 }
	 else if (choice == 4)
	 {
	  	  cout<<"\n\nPlease enter the number of moles: ";
	  	  cin>>moles;
	  	  atoms = moles * 6.022e+23;
	  	  cout<<"\n\nThe number of atoms is: "<<atoms<<"\n\n\n";
		  }
     else if (choice == 5)
     {
	  	  cout<<"\n\nPlease enter the number of atoms (ex. 1.65*10^24 becomes 1.65e+24): ";
	  	  cin>>atoms;
	  	  moles = atoms / 6.022e+23;
	  	  cout<<"\n\nThe number of moles is: "<<moles<<"\n\n\n";
		  }
     else if (choice == 6)
     {
	  	  cout<<"\n\nPlease enter the number of atoms (ex. 1.65*10^24 becomes 1.65e+24): ";
	  	  cin>>atoms;
	  	  cout<<"\n\nPlease enter the atomic mass of the atom you want to convert: ";
	  	  cin>>mass;
	  	  moles = atoms / 6.022e+23;
	  	  grams = moles * mass;
	  	  cout<<"\n\nThe amount (in grams) of the atom is: "<<grams<<"\n\n\n";
		  }
     else {
                   cout <<"Error - Invalid input; only 1 or 2 allowed.\n";
  }
    system ("pause");
    return 0;
    break;
    case 2:
         cout<<"\t\n\n\nStoichiometry Calculator\n\n\n";
 	cout<<"Enter the amount (in grams) of the known compound: ";
 	cin>>grams;
 	
 	cout<<"\nEnter the atomic mass of the known compound: ";
 	cin>>mass;
 	molesk=grams/mass;
 	
 	cout<<"\nEnter the mole ratio of UNKOWN compound to KNOWN compound (Use the coefficient \n";
	cout<<"from the balanced equation). Enter in decimal format: ";
 	cin>>ratio;
 	molesu=molesk*ratio;
 	
 	cout<<"\nEnter the atomic mass of the unkown compound (in grams): ";
 	cin>>massu;
 	final=molesu*massu;
 	cout<<"\nThe final answer is: "<<final<<"\n\n\n";
 	
 	system ("pause");
 	return 0;
 	break;
 	case 3:
         cout<<"Which would you like to find out more about?\n";
         cout<<"\n1 - The Mole/Gram/Atom Calculator\n";
         cout<<"2 - The Stoichiometry Calculator\n";
         cout<<"\nPlease type in your answer (1 or 2): ";
         cin>>choicetwo;
         }
  switch (choicetwo)
  {
         case 1:
              cout<<"\n\nThis calculator does many different conversions between Atoms, Grams and Moles.\n";
              break;
         case 2:
              cout<<"This calculator recieves your input and gives you the answer to a Stoichiometric problem.\n";
              break;
              }
   cout<<"\n\n\n---------------------------------------------------------------------\n";
    cout<<"1 - Mole/Gram/Atom Calculator\n";
    cout<<"2 - Stoichiometry Calculator\n";
    cout<<"---------------------------------------------------------------------\n";
    cout<<"\nPlease type in your choice (1 or 2). To find out more information about either \n";
    cout<<"choice, type 3: ";
    cin>>chemchoice;
    system("cls");
     switch (chemchoice)
    {
           case 1:
                cout<<"\t\n\n\nMoles -- Grams -- Atoms Converter\n\n\n";
 	cout<<"There is a list of choices below:\n\n";
 	cout<<"1 - Grams to Moles\n";
 	cout<<"2 - Grams to Atoms\n";
 	cout<<"3 - Moles to Grams\n";
 	cout<<"4 - Moles to Atoms\n";
 	cout<<"5 - Atoms to Moles\n";
 	cout<<"6 - Atoms to Grams\n";
 	cout<<"\nPlease enter the number of your choice: ";
 	cin>>choice;
 	
 	if (choice == 1)
 	{
		   		cout<<"\n\nPlease enter the atomic mass of the atom: ";
		   		cin>>mass;
		   		cout<<"\nPlease enter the number of grams of the atom: ";
		   		cin>>grams;
		   		moles = grams / mass;
		   		cout<<"\n\nThe number of moles of this atom is: "<<moles<<"\n\n\n";
				}
     else if (choice == 2)
     {
		   		cout<<"\n\nPlesase enter the grams of the atom: ";
		   		cin>>grams;
		   		cout<<"\nPease enter the atomic mass of the atom: ";
		   		cin>>mass;
		   		x = grams/mass;
		   		atoms = x * 6.022e+23;
		   		cout<<"\n\nThe number of atoms is: "<<atoms<<"\n\n\n";
				}
     else if (choice == 3)
     {
 		 cout<<"\n\nPlease enter the atomic mass of the atom: ";
 		 cin>>mass;
 		 cout<<"\nPlease enter the number of moles of the atom: ";
 		 cin>>moles;
 		 grams = moles*mass;
 		 cout<<"\n\nThe number of grams of the atom is "<<grams<<"\n\n\n";
		 }
	 else if (choice == 4)
	 {
	  	  cout<<"\n\nPlease enter the number of moles: ";
	  	  cin>>moles;
	  	  atoms = moles * 6.022e+23;
	  	  cout<<"\n\nThe number of atoms is: "<<atoms<<"\n\n\n";
		  }
     else if (choice == 5)
     {
	  	  cout<<"\n\nPlease enter the number of atoms (ex. 1.65*10^24 becomes 1.65e+24): ";
	  	  cin>>atoms;
	  	  moles = atoms / 6.022e+23;
	  	  cout<<"\n\nThe number of moles is: "<<moles<<"\n\n\n";
		  }
     else if (choice == 6)
     {
	  	  cout<<"\n\nPlease enter the number of atoms (ex. 1.65*10^24 becomes 1.65e+24): ";
	  	  cin>>atoms;
	  	  cout<<"\n\nPlease enter the atomic mass of the atom you want to convert: ";
	  	  cin>>mass;
	  	  moles = atoms / 6.022e+23;
	  	  grams = moles * mass;
	  	  cout<<"\n\nThe amount (in grams) of the atom is: "<<grams<<"\n\n\n";
		  }
     else {
                   cout <<"Error - Invalid input; only 1 or 2 allowed.\n";
  }
    system ("pause");
    return 0;
    break;
    case 2:
         cout<<"\t\n\n\nStoichiometry Calculator\n\n\n";
 	cout<<"Enter the amount (in grams) of the known compound: ";
 	cin>>grams;
 	
 	cout<<"\nEnter the atomic mass of the known compound: ";
 	cin>>mass;
 	molesk=grams/mass;
 	
 	cout<<"\nEnter the mole ratio of UNKOWN compound to KNOWN compound (Use the coefficient \n";
	cout<<"from the balanced equation). Enter in decimal format: ";
 	cin>>ratio;
 	molesu=molesk*ratio;
 	
 	cout<<"\nEnter the atomic mass of the unkown compound (in grams): ";
 	cin>>massu;
 	final=molesu*massu;
 	cout<<"\nThe final answer is: "<<final<<"\n\n\n";
 	
 	system ("pause");
 	return 0;
 	break;
 	case 3:
         cout<<"Which would you like to find out more about?\n";
         cout<<"\n1 - The Mole/Gram/Atom Calculator\n";
         cout<<"2 - The Stoichiometry Calculator\n";
         cout<<"\nPlease type in your answer (1 or 2): ";
         cin>>choicetwo;
         }
         switch (choicetwo)
  {
         case 1:
              cout<<"\n\nThis calculator does many different conversions between Atoms, Grams and Moles.\n";
              break;
         case 2:
              cout<<"This calculator recieves your input and gives you the answer to a Stoichiometric problem.\n";
              break;
              }
              }

Hello,

I am struggling in setting up the fltk opengl in VC++. I followed your instruction, it still generate many linking errors. Can you send me your sample project in VC++ 6.0 as my starting point? Otherwise, can you walk me step by step in setting it up?

I can run fltk in VC++ 6.0 but once I added fl_gl_window object in my code, problem occurs.

Thanks in advance,

Giau