c - Trouble creating and storing data for wave file using 2-D arrays -

recently i've been writing songs wave files. however, decided try new: use 2-d arrays. when run program, however, wave file isn't playing anything. intention create array consists of notes , store array data portion of wave file time goes by, different notes playing (i.e. notes i've assigned).

#include <stdio.h> #include <stdlib.h> #include <math.h>  #define   440.00 #define  466.16 #define b   493.88 #define c   523.25 #define cs  554.37 #define d   587.33 #define ds  622.25 #define e   659.25 #define f   698.46 #define fs  739.99 #define g   783.99 #define gs  830.61  int main() {     file* fp;     fp = fopen("song.wav", "wb");     if (fp == null) {         printf("file not exist.\n");         return exit_failure;     }     char chunkid[4] = "riff", format[4] = "wave", subchunk1id[4] = "fmt ", subchunk2id[4] = "data";     unsigned int chunksize, subchunk1size, subchunk2size;     unsigned short int audioformat, numchannels, blockalign, bitspersample;     int samplerate, byterate;     chunksize = 12 + 24 + 8 - 8 + 5 * 44100 * 2;     subchunk1size = 16;     audioformat = 1;     numchannels = 1;     samplerate = 44100;     byterate = 2 * samplerate;     bitspersample = 16;     blockalign = numchannels * bitspersample / 8;     subchunk2size = 9 * byterate;     int i, j;     short int audio[9][9] = {a, b, cs, d, e, d, cs, b, a};     float freq, amplitude = 32700;     (i = 0; < 9 * samplerate; i++){         (j = 0; j == i; j++)             freq = audio[i][j] * 2.0 * m_pi;           *audio[i] = amplitude * sin(freq * / samplerate);     }     fwrite(chunkid, 4, 1, fp);     fwrite(&chunksize, 4, 1, fp);     fwrite(format, 4, 1, fp);     fwrite(subchunk1id, 4, 1, fp);     fwrite(&subchunk1size, 4, 1, fp);     fwrite(&audioformat, 2, 1, fp);     fwrite(&numchannels, 2, 1, fp);     fwrite(&samplerate, 4, 1, fp);     fwrite(&byterate, 4, 1, fp);     fwrite(&blockalign, 2, 1, fp);     fwrite(&bitspersample, 2, 1, fp);     fwrite(subchunk2id, 4, 1, fp);     fwrite(&subchunk2size, 4, 1, fp);     fwrite(audio, 2, 1, fp);     fclose(fp);     return exit_success; } 

not quite sure tune trying write wav. file, few initial errors:

short int audio[9][9] = {a, b, cs, d, e, d, cs, b, a}; 

this creates 9x9 array a, b, etc. stored in audio[0], , other values initialized 0. later, trying calculate frequencies, of values audio 0.

  (i = 0; < 9 * samplerate; i++){ 

since samplerate = 44100, going step out of bounds of audio array quickly.

    *audio[i] = amplitude * sin(freq * / samplerate); 

what line store computed value int in audio[i][0] after said , done. i'm not sure why have 2 dimensional array when you're not trying it.

happy debugging!