Need help using pow function in problem

[matrim]

What I'm trying to do:

1. Attempt to open the file. The filename, c:\\windData.tx t, should be hardcoded into your program. Note the two slash characters in the file name. If the file cannot be opened, display a message and exit the program.
2. From the file read a temperature and a wind speed. Both values should be stored in variables declared as double. The file is a text file.
3. Calculate the wind chill factor using a programmer written function, and display the result in the form:

For t = temperature from file
and v = wind speed from file
Wind chill index = calculated result degrees Fahrenheit.
4. Repeat these steps until an end of file is encountered.

What I have so far which isn't right i know ;) :

#include <iostream>
#include <fstream>
#include <string>
#include <math>

using namespace std;
double pow(double x, double y);
double y = .16;
int main( )
{
   

   // Open the file
   ifstream theFile("windData.txt");
	   cout << "Attempting to open the file" << endl;

   if (theFile.good( ) )
   {
	   double number = 0;
	   double temp = 0;
	   double windspd = 0;
	   double count = 0;
	   
	   cout << "File opened successfully." << endl;
	   while (theFile >> number)
	   {
		   if (count == 0)
		   {
			   temp = number;
			   windspd = number;
		   }
		
		
			 
			 double v = windspd;
			W = 35.74 + 0.6215(temp) - 35.75 pow(windspd, y) + 0.4275(temp)pow(windspd, y);
			 //double W = (35.74 + 0.6215(t)) - 35.75 (pow(v, y)) + 0.4275(t)(pow(v, y));
		cout << W << endl;
		
		
		temp += number;
		count++;
		
		}
	   
   }
   else
   {
	   cout << "\nCould not open the file...";
	   exit(1);
   }

   system("PAUSE");
   cin.get();
   return 0;
}

[matrim]

The actual formula is :

W = 35.74 + 0.6215t - 35.75 (v0.16) + 0.4275t(v0.16)

[Banfa]

I see nothing wrong in the way you are using the pow function but in this line

W = 35.74 + 0.6215(temp) - 35.75 pow(windspd, y) + 0.4275(temp)pow (windspd, y);

You need to add all the multiplication operators, i.e. 0.6215(temp) needs to be 0.6215 * temp