Thread: Function assignment problems

I have an assignment where I'm supposed to take an old code and rewrite it using functions. I'm still a little shady on where I'm supposed to include certain parts of information. Could someone take a look at them and see where I misplaced the information? I'm brand new to this so please don't assume this is sloppy work because I'm lazy. This is my original code:

Code:

#include <iostream>
#include <cmath>
#include <iomanip>

using namespace std;


int main()
{
   // Declare and initialize variables and constants


   //(r = radius, g = acceleration due to gravity,
   // ds = solid density, df = fluid density,
   // fv = fluid viscosity, v = velocity, t = time,
   // d = distance to bottom of tank.)


   double r, g, d, ds, df, fv, v, t, df1, ds1, fv1;


   //**Print values**//


   //Constants


   cout << "Distance to bottom of tank =  20.0 cm" << endl;
   cout << "Radius of the particle =       0.5 cm" << endl;
   cout << "Local value of g (gravity) = 980.00 cm/s^2" << endl;


   //User inputs


   cout << endl;
   cout << "Please enter a value for the fluid density (g/cm^3): ";
   cin >> df;


   cout << "The value you entered is " << df << endl;
   df1=df;


   cout << endl;
   cout << "Please enter a value for the solid density (g/cm^3): ";
   cin >> ds;
   cout << "The value you entered is " << ds << endl;
   ds1=ds;


   cout << endl;
   cout << "Please enter a value for the fluid viscosity (g/cm-s): ";
   cin >> fv;
   cout << "The value you entered is " << fv << endl;
   fv1=fv;


   r=0.5, g=981, d=20;
   v = ((2.0/9)*((ds1-df1)/fv1)*g*r*r)/100;
   t = (d/v);


   //Calculations


   cout << endl;
   cout << fixed << setprecision(2);
   cout << "Fluid density: " << setw (10) << df << " g/cm^3" << endl;
   cout << "Solid density: " << setw (10) << ds << " g/cm^3" << endl;
   cout << "Fluid viscosity: " << setw (8) << fv << " g/cm-s" << endl;
   cout << "Velocity: " << setw(15) << v << " cm/s" << endl;
   cout << "Falling time: " << setw (11) << t << " s" << endl;


   return 0;
}

and this is the one I'm trying to create using functions:

Code:

#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;


//Constants


void printInformation ()
{
   cout << "Distance to bottom of tank =  20.0 cm" << endl;
   cout << "Radius of the particle =       0.5 cm" << endl;
   cout << "Local value of g (gravity) = 980.00 cm/s^2" << endl;
}


// Declare and initialize variables and constants


   //(r = radius, g = acceleration due to gravity,
   // ds = solid density, df = fluid density,
   // fv = fluid viscosity, v = velocity, t = time,
   // d = distance to bottom of tank.)


    void calculateVelocityAndTime(double r, double g, double d, double df,
        double ds, double fv, double& v, double& t)
 {  v = ((2.0/9)*((ds-df)/fv)*g*r*r)/100;
    t = (d/v);
   cout << endl;
   cout << fixed << setprecision(2);
   cout << "Fluid density: " << setw (10) << df << " g/cm^3" << endl;
   cout << "Solid density: " << setw (10) << ds << " g/cm^3" << endl;
   cout << "Fluid viscosity: " << setw (8) << fv << " g/cm-s" << endl;
   cout << "Velocity: " << setw(15) << v << " cm/s" << endl;
   cout << "Falling time: " << setw (11) << t << " s" << endl;
 }


    void displayResults(double dp, double mu, double r,
        double H, double Ho, double velocity, double time);


int main()
{
    printInformation();
    cin << df << endl;
    cin << ds << endl;
    cin << fv << endl;
    displayesults();
    cout << v << " " << t << endl;
   return 0;
}