Source of ftemp_to_ctemp1.cpp

Structures and functions

  1: //ftemp_to_ctemp1.cpp
  2: //Converts a Fahrenheit temperature to Celsius.

  4: #include <iostream>
  5: using namespace std;


  8: int CelsiusTemp(double fTemp)
  9: {
 10:     const double C_DEGREE_PER_F_DEGREE = double(5) / double(9);

 12:     double cTemp = (fTemp - 32) * C_DEGREE_PER_F_DEGREE;

 14:     if (cTemp >= 0)
 15:         return int(cTemp + 0.5);
 16:     else
 17:         return int(cTemp - 0.5);
 18: }


 21: int main()
 22: {
 23:     cout << "\nThis program converts a Fahrenheit temperature to "
 24:         "an equivalent Celsius value.\nBoth values are reported in "
 25:         "rounded form.\n\n";

 27:     double fTemp;
 28:     cout << "Enter your Fahrenheit value here: ";
 29:     cin >> fTemp;  cin.ignore(80, '\n');

 31:     //Round the Fahrenheit temperature to the nearest integer
 32:     if (fTemp >= 0)
 33:         fTemp = int(fTemp + 0.5);
 34:     else
 35:         fTemp = int(fTemp - 0.5);

 37:     cout << "\nFahrenheit Temperature:   " << fTemp
 38:          << "\nEquivalent Celsius Value: " << CelsiusTemp(fTemp);
 39:     cout << endl << endl;
 40: }