Original sentence: char   *first_name;.char   *last_name;.char *first_name;.char *last_name;.char *name;.float  balance;.float balance;.int    account_number;.int account_number;.long a, b, c;.long x, y, z;.long x, y;.operate_on_ifoo(&s);.struct account s;.struct account {.struct ifoo_old_stub s;.struct ifoo_old_stub {.struct ifoo_version_42 {.typedef struct account_ {.void operate_on_ifoo(struct ifoo_version_42 *);