a problem with create table statement

create table emp
(
empno number(4) not null,
ename char(10),
job char(9),
mgr number(4),
hiredate date,
sal number(7,2),
comm number(7,2),
deptno number(2) not null,
foreign key(deptno) references dept(deptno)
constraint emp_f,
foreign key(empno) references emp
(empno) constraint emp_self,
primary key(empno) constraint emp_pri
);

@emp

I get an error with the following message:
constraint emp_f
*
ERROR at line 12:
ORA-00907: missing right paranthesis

I will be very grateful if anybody could tell me the problem.

Thank u.

Wrong syntax. Change that to:

create table emp
(
empno number(4) not null,
ename char(10),
job char(9),
mgr number(4),
hiredate date,
sal number(7,2),
comm number(7,2),
deptno number(2) not null,
constraint emp_f foreign key(deptno) references dept(deptno),
constraint emp_self foreign key(empno) references emp(empno),
constraint emp_pri primary key(empno)
);