Question

ACCEPT scale PROMPT 'Enter your input scale (C or F) for temperature: ';
ACCEPT temp PROMPT 'Enter your temperature value to be converted: ';
DECLARE
v_scale CHAR(1) := UPPER('&scale');
v_temp NUMBER := '&input';

BEGIN

IF (v_scale) = ('F') THEN
   v_temp := (v_temp - 32) * 5/9;
   DBMS_OUTPUT.PUT_LINE ('You converted temperature in C is exactly ' || TO_CHAR(v_temp));

ELSIF (v_scale) = ('C') THEN
   v_temp := (v_temp * 9/5) + 32;
   DBMS_OUTPUT.PUT_LINE ('You converted temperature in F is exactly ' || TO_CHAR(v_temp));

ELSE
   DBMS_OUTPUT.PUT_LINE ('This is NOT a valid scale. Must be C or F.');

END IF;

END;

/

运行代码时，它要求我输入2个输入，例如F和100。然后，它仅显示“ PL / SQL过程已成功完成” 。

看起来它从未运行过 DBMS_OUTPUT.PUT_LINE ??怎么来的？？我是pl sql的新手，所以对上面的newvie错误感到抱歉

谢谢

Answer 1

尝试在脚本的开头添加SET SERVEROUTPUT ON。

如果是，PL SQL中的ELSIF和ELSE条件不起作用

1 个答案: