-> slash in a SQL script make so bad or sqlplus

SQL> delete emp1;
delete emp1
*
ERROR at line 1:
ORA-00942: table or view does not exist

SQL> exec dbms_stats.gather_table_stats(user,’A');

PL/SQL procedure successfully completed.

SQL> list
1* delete emp1
SQL>
SQL>
SQL> begin
2 dbms_stats.gather_table_stats(user,’A');
3 end;
4 /

PL/SQL procedure successfully completed.

SQL> list
1 begin
2 dbms_stats.gather_table_stats(user,’A');
3* end;