-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all. It looks like the list is silently dropping messages with attachments again, so I'm sending the below for the third time. I'll post the code at the bottom of the message, though am not sure how it will come through in the message body. If anyone would like an attachment, feel free to drop me a line. It looks like my previous message didn't make it to the list, so I'm resending. If anyone is interested, I'm attaching my heat index calculator program. It accepts temperature and relative humidity on the command-line, and will prompt if one or both are not given. If you would rather have the program display an exact unrounded result, uncomment the appropriate line towards the bottom of the main function, and comment out the line above it. To compile it, run: g++ -o hi hi.cpp Have fun. Greg ---cut here--- /* Program for calculating heat index by Greg Nowak <greg at romuald.net.eu.org>. Heat index formula taken from http://www.usatoday.com/weather/whicalc.htm */ // June 09, 2004 #include <iostream> #include <cstdlib> #include <cmath> using namespace std; double calc_hi (double, double); int main (int argc, char *argv[]) { double temp; double humidity; double result; result = temp = humidity = 0.0; if (argc == 1) { cout << "\nProgram for calculating heat index by Greg Nowak <greg at romuald.net.eu.org>.\n"; cout << "\nNo command line arguments found.\n"; cout << "In the future, you may pass temperature in Fahrenheit, and relative humidity, in percent, without the percent\n" << "sign as arguments.\n\n"; cout << "Please enter the temperature in Fahrenheit:\n"; cin >> temp; cout << "\nPlease enter the relative humidity, in percent, without the percent sign (E.G. 65):\n"; cin >> humidity; } else if (argc == 2) { cout << "Please enter the relative humidity, in percent, without the percent sign (E.G. 65):\n"; cin >> humidity; temp = atof (argv[1]); } else { temp = atof (argv[1]); humidity = atof (argv[2]); } result = round (calc_hi (temp, humidity)); // uncomment the line below to get an exact result without rounding // result = calc_hi (temp, humidity); cout << "\nThe heat index is " << result << " degrees Fahrenheit.\n\n"; return 0; } double calc_hi (double t, double h) { // If anything other then numerical values and/or a period is passed to either argument of this function, the resulting return value is undefined. double result = -42.379; result += 2.04901523 * t; result += 10.14333127 * h; result -= 0.22475541 * t * h; result -= 6.83783 * pow (10.0, -3.0) * pow (t, 2.0); result -= 5.481717 * pow (10.0, -2.0) * pow (h, 2.0); result += 1.22874 * pow (10.0, -3.0) * pow (t, 2.0) * h; result += 8.5282 * pow (10.0, -4.0) * t * pow (h, 2.0); result -= 1.99 * pow (10.0, -6.0) * pow (t, 2.0) * pow (h, 2.0); return result; } - ---cut here--- - -- Free domains: http://www.eu.org/ or mail dns-manager at EU.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQFAx9KX7s9z/XlyUyARAkdZAJkB5bxiB3aetUnefGYiDLiBhtQRkACcCSzU 39/z6SQ1B4RgbKywITPrgOU= =pj+7 -----END PGP SIGNATURE-----
