char **addstr(char **a, const char *s)	{
	
	if(s!=NULL && a!=NULL)	{
		char **pa=a;
		while(strcmp(*pa,""))	pa++;
		a=(char**)realloc(a, (pa-a+2)*sizeof(char*));
		pa=a;
		while(strcmp(*pa,""))	pa++;
		*(pa+1)=(char*)malloc(sizeof(char)*SIZE_CODE_LINE);
		**(pa+1)='\0';
		strcpy(*pa, s);
		pa=NULL;
	}
	return a;
}