Do I need to wrap SQlite calls with extern "C" in my C++ application?

DO I need to wrap SQLite(http://www.sqlite.org/) library calls in my C++ application as :

extern "C" {    

    //Wrapping SQLite C header
    #include "sqlite3.h" 

    // Some example function definitions
    int sqlite3_open(const char *filename,sqlite3 **ppDb);
    void sqlite3_free(void*);
    int sqlite3_close(sqlite3*);
}

Or can I access the library directly (as most examples show in the website)? Would also love to know the reason behind the right answer.