Alrightm I finished but it looks totally different. I need to write a function that will round any given number to the 10th decimal place.

Code:
//Chris Taylor
//March 15th, 2006
//Intermediate C++, Terminal 6.
//Cube Thingy

#include <iostream.h>
#include <fstream.h>
#include <conio.h>

  //Prototype statements
  void pdescription();
  int choice (int choose);
  float c(float fa);
  float f(float ce);
  void output(float fa, float ce);

 int main()
  {
   //Variable declaration
   float fa=32; //Fahrenheit variable.
   float ce=0; //Celsius variable.
   int choose=0; //Stored for intial choice.

   pdescription();//Calls the function "description"
   choice (choose);//Calls the function "choice"

   if (choose==0)//Determines what is being converted to what.
   {
    f(ce);
   }

   else
   {
    c(fa);
   }

   output(fa, ce);

   getch();
   return 0;
  }

void pdescription()//Prints out program description
{
   cout << "What do you want to start with, enter your number than print enter.\n";
}


int choice(int choose)//Allows user to choose what is being converted to.
{
   cout << " 0. Fahrenheit\n";
   cout << " 1. Celsius\n";
   cin >> choose;
   return choose;
}

float c(float fa)//For converting into fahrenheit.
{
 float ce;
 cout << "Input your celsius vaulue and press\nENTER.\n";
 cin >> ce;
 fa=(1.8*ce)+32; //Formula to convert c to f.
 return fa;
}

float f(float ce)//For converting into celsius.
{
 float fa;
 cout << "Input your fahrenheit vaulue and press\nENTER.\n";
 cin >> fa;
 ce=(fa-32)*(5.0/9.0);//Formula to convert f to c.
 return ce;
}

void output(float fa, float ce)//Prints fahrenheit and celsius value to the screen.
{
 clrscr();
 cout << "Fahrenheit value is: " << fa << endl;
 cout << "Celsius value is: " << ce;
}