Little Help With audio processing!

 
 //VERSION 2_1
#include <iostream>
#include <math.h>
#include <fstream>
#include <iomanip>
using namespace std;

#define WAVELENGTHSECONDS 1
#define FREQUENCY 1000.0
#define SAMPLINGRATE 44100
#define PI 3.1415926535897932384626433832795
#define RAWFILENAME "d:\\wave.raw"
#define FILENAME "d:\\wave.txt"
#define STEPS SAMPLINGRATE * WAVELENGTHSECONDS
#define ARRAYLENGTH STEPS
#define OUTPUTLENGTH 2000
#define MAXIMUM_AMPLITUDE 32767
#define MINIMUM_AMPLITUDE -32768
#define CHARARRAYLENGTH ARRAYLENGTH * 2

class wave
{
private:
 double sample[ARRAYLENGTH];
 double interval;
 char charArray[CHARARRAYLENGTH];
public:
 wave()
 {
  // constructor
  // interval is time step
  interval = 1.0/(SAMPLINGRATE);  
  
  // always start with a sine wave 1000 hz maximum amplitude
  createSineWave(1000.0,MAXIMUM_AMPLITUDE);
  
 }
 double getSample(int sampleNumber)
 {
  return sample[sampleNumber];
 }
 void setSample(int sampleNumber, double value)
 {
  sample[sampleNumber] = value;
 }
 
 bool saveToRawFile(void)
 {
  bool fileOpened = false;
  
  ofstream outfile;
  outfile.open(RAWFILENAME, ofstream::binary);
 
  if(outfile.good() != 1)
  {
   cout << "There is a problem with opening "<< RAWFILENAME; 
   return fileOpened;
  }
  signed short s =0;
  int charCount = 0;
  signed char c1, c2;
  for(int i =0;i<ARRAYLENGTH;i++)
  {
   
   s = (signed short)getSample(i);
   // write the wrong way around!!!
   c1 = (signed char)(s >> 8);
   c2 = (signed char)(s & 0x00ff);
   charArray[charCount++] = (signed char)(s >> 8);
   charArray[charCount++] = (signed char)(s & 0x00ff);
  }
  outfile.write(charArray,CHARARRAYLENGTH);
  
  outfile.close();
  cout << RAWFILENAME << " written" << endl;
  return fileOpened;
 }
 bool saveToTxtFile(void)
 {
  bool fileOpened = false;
  
  ofstream outfile;
  outfile.open(FILENAME);
 
  if(outfile.good() != 1)
  {
   cout << "There is a problem with opening "<< FILENAME; 
   return fileOpened;
  }

  for(int i =0;i<OUTPUTLENGTH;i++)
  {
   outfile << (signed short)getSample(i) << endl;
  }
  outfile.close();
  cout << FILENAME << " written" << endl;
  return fileOpened;
 }
 void createSineWave(double frequency, double amplitude)
 {
  // sets up sine wave values
  int i;
  double value;
  double time = 0.0;
  for(i=0;i<ARRAYLENGTH;i++)
  {
   value =  sin(2* PI* frequency* time)* amplitude;
   setSample(i,value);
   time = time + interval;
  }
  cout << "sinewave created" << endl;
 }
 void createSquareWave(double frequency, double amplitude)
 {
  int i;
  createSineWave(frequency, amplitude);
  for(i=0;i<ARRAYLENGTH;i++)
  {
   if(sample[i] >= 0)
   {
	sample[i] = MAXIMUM_AMPLITUDE;
   }
   else
   {
	sample[i] = MINIMUM_AMPLITUDE;
   }
  }
 }
 void processGain(double gain)
 {
  // got to do this!
 }
 void fadeIn(void)
 {
  // got to do this!
 }
 void fadeOut(void)
 {
  // got to do this!
 }
 
};
void main(void)
{
 wave w;
 w.saveToRawFile();
}