Question

When i try to compile this as part of an objective-c program it gives the warning:
warning: passing argument 1 of 'sqlite3_close' from incompatible pointer type

sqlite3 *db; sqlite3_open('~/Documents/testdb.sqlite', &db); /*stuff*/ sqlite3_close(&db); 

An almost identical error is given with nearly any other function call that uses &db.

Answer 1

I don’t think you need the second &… If this is anything like plain c, you just want to call sqlite3_close(db); (Thereby passing it the pointer itself, rather than the address of the pointer.) The sqlite3_open call would, I believe, be left as is.