Plsql 如何执行pl/sql过程

程序：

create or replace 
PROCEDURE ADDITION 
(
  A IN NUMBER  
, B IN NUMBER  
, C OUT number
) AS 
BEGIN
  C := A+B;
  dbms_output.put_line(c);
END ADDITION;

begin
 addition(4,5);
end;

PLS-00306: wrong number or types of arguments in call to 'ADDITION'
ORA-06550: line 2, column 2:
PL/SQL: Statement ignored
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

执行：

create or replace 
PROCEDURE ADDITION 
(
  A IN NUMBER  
, B IN NUMBER  
, C OUT number
) AS 
BEGIN
  C := A+B;
  dbms_output.put_line(c);
END ADDITION;

begin
 addition(4,5);
end;

PLS-00306: wrong number or types of arguments in call to 'ADDITION'
ORA-06550: line 2, column 2:
PL/SQL: Statement ignored
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

错误：

create or replace 
PROCEDURE ADDITION 
(
  A IN NUMBER  
, B IN NUMBER  
, C OUT number
) AS 
BEGIN
  C := A+B;
  dbms_output.put_line(c);
END ADDITION;

begin
 addition(4,5);
end;

PLS-00306: wrong number or types of arguments in call to 'ADDITION'
ORA-06550: line 2, column 2:
PL/SQL: Statement ignored
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

---

如何更正此错误。请告诉我代码中的错误所在

您的过程需要一个

out

参数，您还需要提供：

declare
 add_result number;
begin
 addition(4,5,add_result);
end;
/

---

错误：-->PLS-00905:对象系统。添加无效ORA-06550:第4行第2列：PL/SQL:语句已忽略06550。00000-“行%s，列%s:\n%s”*原因：通常是PL/SQL编译错误*动作：@user3021349:那么你并没有告诉我们所有的事情，因为这确实有效：我这里喜欢

变量n数字加法（4,5，：n）；打印n但这里面有点不对劲。你能纠正一下吗this@user3021349：sqlfiddle不支持DBMS_输出，但正如您所看到的，没有错误。所以突然你有了一个“变量”
：n
。那是从哪里来的？你为什么不在最初的问题中包含这些信息？您使用哪个SQL客户机（工具）来运行这些语句？但我在SQL developer中尝试了您的答案，我发现了错误。为什么？