question static int newbie en c je suis

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

static int n=0;  // question : how could i do a static int in the main fonction cause this silly n has not to be general over 1 milion line of code


void messagetextinit()
{
    printf(";\n")
    printf(";\tThis code is generated\n");
    printf(";\t and can be overwriten\n");
    printf(";\t\if you want to edit, work on a copy on another folder\n");
    printf("\n);
}
void writedcb(short int x)
{
    if (n==0)
    {
      printf("dc.w %d,",x);
    }
    else if (n==15)
    {
     printf("%d\n",x);
    }
    else
    {
     printf("%d,",x);
    }
    n=(n+1) & 15;
}
void nl()
{
    printf("\n");
}


int ajoutemask(int* tab,int masque,int champvaleur)
{
    for (int i=0;i<65536;i++)
    {
        int v=i & masque;
        tab[v]=champvaleur;
    }


}

int main(int argc,char** argv)
{
    messagetextinit;
    int sinx;
    for(int i=0;i<1540;i++)
    {
        int value=32767*sin((i+0.5)*2*3.1415926/1540/4);
        if (i<(1540-1))
        {
            writedcb(value);
        } else
        {
           printf("%d\n",value);
        }
    }
    nl;


    int* tableauflag = malloc(sizeof(int)*65536);

















}