helper function to get newest id

src/db.c

@@ -4,6 +4,19 @@
 
 #include "include/db.h"
 
+static int get_num_rows(sqlite3* db)
+{
+	int rows = 0;
+
+	sqlite3_stmt* msg;
+	sqlite3_prepare(db, "SELECT * FROM books;", -1, &msg, NULL);
+	while (sqlite3_step(msg) == SQLITE_ROW)
+		rows++;
+	sqlite3_finalize(msg);
+	
+	return rows;
+}
+
 void setup_db(sqlite3* db)
 {
 	int err;