5.2
5.2
块
块
if
if
语句
语句
---“if” sentence which
---“if” sentence which
is writen in multi lines
is writen in multi lines
✔
功能 :
对现实生活中的条件成立与否做
较复杂
的处
理 .
✔
格式 :
if < 逻辑表达式 > then
✔
<then 语句块 >
✔
[else
✔
<else 语句块 >]
✔
end if
✔
说明 :
执行顺序为 :
5.2
5.2
块
块
if
if
语句
语句
---“if” sentence which
---“if” sentence which
is writen in multi lines
is writen in multi lines
✔
功能 :
对现实生活中的条件成立与否做
较复杂
的处
理 .
✔
格式 :
if < 逻辑表达式 > then
✔
<then 语句块 >
✔
[else
✔
<else 语句块 >]
✔
end if
✔
说明 :
执行顺序为 :