Example Program to convert a temperature from Celsius to Fahrenheit
Source:

/**********************************************************************/
/*                                                                    */
/*   File: Fahrenheit.cpp                                             */
/*   Author: Mike Elms                                                */
/*   Date: 2/4/2012                                                   */
/*   Purpose: To convert a temperature from Celsius to Fahrenheit     */
/*                                                                    */
/**********************************************************************/

#include <iostream>
using namespace std;


int main()
{
   double f;
   double c;

   cout << "Begin" << endl << endl;
   
   cout << "Enter a temperature in Celsius: ";

   cin >> c;
   
   f = (c*(9.0/5.0))+32;

   cout << "Fahrenheit: " << f << endl;

   cout << endl;

   cout << "End" << endl;

   return 0;
}

Output

Test Run 1
Begin

Enter a temperature in Celsius: 0
Fahrenheit: 32

End

Test Run 2
Begin

Enter a temperature in Celsius: 100
Fahrenheit: 212

End