Re: I don't understand the error message, maybe someone else is smarter

/* Hi, I was hoping someone could help me with this problem. I did my
work and worked my way through the usual compiler messages, but I have
run against some problem I can't identify. The compiler error message
is unintelligable -- to me anyway. Anyway: Here is the code, maybe
someone can tell me what is wrong with it. */

//buysome.cpp
//Joshua Moore
//the part responsible for the buying part of the farm pos simulation
program

#include <iostream>
#include <iomanip>
using namespace std;

const float PAPPLES = 1.99;
const float PPEARS = 2.59;
const float PGRAPES = 1.49;

const float MAXFRUIT = 30;
const float MAXTOTAL = 100;
const char EXIT = 'q'; //This is the escape character

void BuyProduct(string productname,
                float PPRODUCT,
                float PRODUCTMAX,
                float& qproduct,
                string categoryname,
                float& categoryweight,
                bool& tlreached);
void MenuFruit();
float WeightLeft(float categoryweight, float totalweight, float
CATEGORYMAX);
int CatOrTotalLeftSmaller(float categoryweight, float totalweight,
float CATEGORYMAX);

//Let the fun begin:
int main()
{
  float qapples, qpears, qgrapes;
  float papples, ppears, pgrapes;
  char choice;
  float categoryw;
  bool tlreached = false;

  do
  {
    MenuFruit();
    cin >> choice;

    switch (choice)
    {
      case 'q':
        break;
      case 'a':
        BuyProduct("Apples", PAPPLES, MAXFRUIT, qapples, "Fruit",
categoryw, tlreached);
        break;
      case 'p':
        BuyProduct("Pears", PPEARS, MAXFRUIT, qpears, "Fruit",
categoryw, tlreached);
        break;
      case 'g':
        BuyProduct("Grapes", PGRAPES, MAXFRUIT, qgrapes, "Fruit",
categoryw, tlreached);
        break;
      default:
        cout << "Please enter a valid choice." << endl;
    } //exit switch
  }while((choice!=EXIT) && (tlreached = false));

  //the rest is just here to display everything
  cout << qapples << " lbs of Apples purchased for: $" <<
setprecision(2) << papples << "." << endl;
  cout << " " << qpears << " lbs of Pears purchased for: $" <<
setprecision(2) << ppears << "." << endl;
  cout << qgrapes << " lbs of Grapes purchased for: $" <<
setprecision(2) << pgrapes << "." << endl;
  return 0;
} //exit main

void MenuFruit(float fruitweight, float totalweight)
{
  cout << "You have room for " << WeightLeft(fruitweight, totalweight,
MAXFRUIT);
  cout << " pounds of Fruit." << endl;

  cout << " [a] Apples, " << setprecision(2) << PAPPLES << " per
pound" << endl;
  cout << " [p] Pears, " << setprecision(2) << PPEARS << " per
pound" << endl;
  cout << " [g] Grapes, " << setprecision(2) << PGRAPES << " per
pound" << endl;
  cout << "What would you like to buy?" << endl;
  cout << "Enter 'q' to go back to the main menu" << endl;
}

//This function returns how much more product can be purchased with
respect to
//both the limits on each category of product and the limits on the
total purchase
//Returns 0 if something is seriously fubr
float WeightLeft(float categoryweight, float totalweight, float
CATEGORYMAX)
{
  float categoryleft = CATEGORYMAX-categoryweight;
  float totalleft = MAXTOTAL - totalweight;
  if (categoryleft <= totalleft)
    return categoryleft;
  else if (totalleft < categoryleft)
    {
      if (totalleft <= CATEGORYMAX)
        return totalleft;
      else if (CATEGORYMAX <= totalleft)
        return CATEGORYMAX;
    }
  return 0;
} //exit Weightleft

//returns 1 if the amount left for the category is smaller than the
amount left for the total
//returns 2 if the amount left for the total is smaller than the
amount left for the category
//returns 3 if the amounts are the same
//returns 0 if something is seriously fubr
int CatOrTotalLeftSmaller(float categoryweight, float totalweight,
float CATEGORYMAX)
{
  float categoryleft = CATEGORYMAX - categoryweight;
  float totalleft = MAXTOTAL - totalweight;

  if (categoryleft < totalleft) return 1;
  if (categoryleft > totalleft) return 2;
  if (categoryleft = totalleft) return 3;
  return 0;
} //exit CatOrTotalLeftSmaller

void BuyProduct(string productname,
                float PPRODUCT,
                float CATEGORYMAX,
                float& qproduct,
                float& totalweight,
                string categoryname,
                float& categoryweight,
                bool& tlreached)
{ //start BuyProduct
  float left;
  float tempproduct;

  cout << productname << " cost $" << setprecision(2) << PPRODUCT <<
"per pound." << endl;
  cout << "How many pounds of " << productname << " would you like to
purchase?" << endl;
  cin >> tempproduct;
  left = WeightLeft(categoryweight, totalweight, MAXFRUIT);

  if (tempproduct < left) //
    qproduct = tempproduct;
    categoryweight = categoryweight + qproduct;
    totalweight = totalweight + qproduct;
  if (tempproduct >= left)
  {
    switch (CatOrTotalLeftSmaller(categoryweight, totalweight,
MAXFRUIT))
    {
    case 1:
        cout << "You have reached the maximum weight for " <<
categoryname << "." << endl;
        cout << "Fortunately, there was still enough left for " <<
left;
        cout << " pounds of " << productname << "," << endl;
        cout << "so that amount has been added to your purchase
instead." << endl;
        qproduct = left;
        categoryweight = categoryweight + left;
        totalweight = totalweight + left;
        break;
    case 2:
    case 3:
        cout << "You have reached the maximum weight for your total
purchase." << endl;
        cout << "Fortunately, there was still enough left for " <<
left;
        cout << " pounds of " << productname << "," << endl;
        cout << "so that amount has been added to your purchase
instead." << endl;
        cout << "Next, we will direct you to the Shipping Method
Selection." << endl;
        qproduct = left;
        categoryweight = categoryweight + left;
        totalweight = totalweight + left;
        tlreached = true;
        break;
    } //exit switch
  } //exit if
} //exit BuyProduct.