expected unqualified-id before string constant

I'm currently writing a C++ application which implements an Oscillator in conjuction with math.h. The code I have should work fine for the application (trying to compile an object file), bu I'm getting a compiler error most likely having to do with syntax/etc; I think it has something to do with namespace. The error:

Terminal Output:

User-Name-Macbook-Pro:Synth Parts UserName$ make
g++ -o Oscillators.o -c -I. Oscillators.cpp -c
In file included from Oscillators.cpp:2:
/usr/include/math.h:41: error: expected unqualified-id before string constant
In file included from /usr/include/c++/4.2.1/bits/locale_facets.tcc:42,
             from /usr/include/c++/4.2.1/locale:46,
             from /usr/include/c++/4.2.1/bits/ostream.tcc:46,
             from /usr/include/c++/4.2.1/ostream:635,
             from /usr/include/c++/4.2.1/iostream:45,
             from Oscillators.cpp:4:
/usr/include/c++/4.2.1/typeinfo:41: error: expected declaration before end of line
make: *** [Oscillators.o] Error 1

Oscillators.cpp

#include "Oscillators.h"
#include <math.h>
#include <vector>
#include <iostream>

#define TWOPI (6.2831853072)

using namespace std;

oscillator(int srate = 44100, int tabsize = 8192, double freq = 200) // Default to output 200Hz Sine Wave
{
    if(srate <= 0) {
        cout << "Error: sample rate must be positive" << endl;
        return;
    }
    sizeovrsr_ = (double)tabsize / (double)srate
    if(freq < 20 || freq > 20000) {
        cout << "Error: frequency is out of audible range" << endl;
        return;
    }
    curfreq_ = freq;
    curphase_ = 0.0 // Not out of one, out of tabsize
    incr_ = curfreq * sizeovrsr_;
    for(int i = 0; i < tabsize; i++) {
        gtable.push_back(sin((i*TWOPI)/(double)tabsize));
    }
    gtable.push_back(gtable[0]);
}

void print_table()
{
    vector<double>::size_type i;
    for(i = 0; i < gtable.size(); i+