calculations in function seem to be ignored, same number returned always
<p><strong>growthRate function:</strong> (as of 8:00 PM 12/11/2010)</p>

<pre><code>    #include "header.h"

float growthRate (float birthRate, float deathRate)     
{   
    float growthrt;  
    growthrt =  (birthRate) - (deathRate);
    cout &lt;&lt; growthrt &lt;&lt; endl; 
    return growthrt;

}
</code></pre>

<p><strong>estimatedPopulation function:</strong> (as of 8:00 PM 12/11/2010)</p>

<pre><code>#include "header.h"

float estimatedPopulation (float currentPopulation, float years, float birthRate, float deathRate)
{
    int x;
    float newPopulation;
    for (x = 0; x &lt; years; x++)
    {
    newPopulation = currentPopulation + currentPopulation * (growthRate (birthRate, deathRate) / 100);
    currentPopulation  = newPopulation;
    cout &lt;&lt; newPopulation &lt;&lt; endl;
    }

    return newPopulation;
}
</code></pre>

<p><strong>output function:</strong>(as of 8:00 PM 12/11/2010)</p>

<pre><code>#include "header.h"

void output (float currentPopulation, float years)

{     
     cout &lt;&lt;  estimatedPopulation (currentPopulation, years) &lt;&lt; endl;
}     
</code></pre>

<p><strong>main function</strong>:(as of 8:00 PM 12/11/2010)</p>

<pre><code>#include "header.h"

int main ()
{

    float currentPopulation, birthRate, deathRate, years;

    char response; 


     do //main loop
      { 
           input (currentPopulation, birthRate, deathRate, years);
           growthRate (birthRate, deathRate);
           estimatedPopulation (currentPopulation, years, birthRate, deathRate);
           output (currentPopulation, years, birthRate, deathRate);
           cout &lt;&lt; "\n Would you like another population estimation? (y,n) ";
           cin &gt;&gt; response;
      }          
    while (response == 'Y' || response == 'y');

    myLabel ("5-19", "12/09/2010");   

    system ("Pause");

    return 0;

}    
</code></pre>

<p><strong>edit (8:00 PM 12/11/2010)</strong></p>

<p>Solved! parameters, parameters, parameters! thanks for the input everyone.</p>
