static int callback(void *NotUsed, int argc, char **argv, char **azColName){
int i;
+ if (NotUsed) {
+ fprintf(stderr, "sqlite3 callback unused = %p\n", NotUsed);
+ }
for(i=0; i<argc; i++){
printf("%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL");
}