/*
   
*/
char **flatstr(char **list,int nmemb){
	int nrbyte=0,r=0;
	void *pt=NULL;
	int nr=nmemb;
	while(--nr){
	  int i=strlen(list[nr]);
	  nrbyte+=++i;
	}
	pt=malloc(/*header*/nmemb*(sizeof(char *)+1)+/*data*/nrbyte+1);
	arr[nmemb]=NULL; //terminate pointer
	/*
		setup pointer
		what we have here is array of pointer has shape:
			char *arr[nmemb]; //in header site
	*/
	nr=nmemb;
	char **arr=(char **)pt;
	int pos=nmemb*sizeof(char *)+sizeof(char *);
	while(--nr){
		arr[r]=(char*)(arr+pos);
		pos=pos+strlen(list[r]);pos++;
		r++;
	}
	/*now I copy*/
	nr=nmemb;
	r=0;
	while(--nr){
		strcpy(arr[r],list[r]);
		r++;
	}
	return arr;
}