//
// convert5.cpp
// CSC 215
// John Rogers
//
// This program converts from either Mexican Pesos or Canadian
// dollars to American dollars.  It checks its input to make
// certain that a legal value for the type of currency is
// entered.  It allows the user to repeat the conversions
// any number of times.
//

#include <iostream.h>
#include <stdlib.h>
#include <ctype.h>

double convert(char currencyType, double amount);

int main()
{
    double amount, USDollars;
    char currencyType;
    char answer;

    cout.setf(ios::fixed);
    cout.setf(ios::showpoint);
    cout.precision(2);

    do {

      cout << "Enter M to convert from Mexican Pesos and C to ";
      cout << "convert from Canadian dollars: ";

      cin >> currencyType;

      cout << "Enter the amount to convert: ";
      cin >> amount;

      USDollars = convert(currencyType, amount);

      cout << "That amount in US dollars is: $" << USDollars << endl;

      cout << "Do you wish to repeat? ";
      cin >> answer;
      answer = toupper(answer);

    } while (answer == 'Y');
    
    return 0;
}

double convert(char currencyType, double amount)
{
  double exchangeRate, USDollars;

  if (currencyType == 'M' || currencyType == 'm') {
    exchangeRate = 7.60;
  }
  else if (currencyType == 'C' || currencyType == 'c') {
    exchangeRate = 1.48;
  }
  else {
    cout << "The currency type must be either M or C." << endl;
    exit(1);
  }
  USDollars = amount / exchangeRate;
  return USDollars;
}