摘要： create or replace procedure test_yurui( p_line in number) is v_line number;begin v_line:=p_line; if(v_line<1) then dbms_output.put_line('请输入>=1的整数'); end if; for v in 1..p_line loop for m in 1..p_line-v loop dbms_output.put(' '); end loop; for n in 1..2*v-1 loop dbms_output.put 阅读全文