flow
st=>start: 开始
e=>end: 结束
op=>operation: 操作
sub1=>subroutine: 子程序
cond=>condition: Yes or No?
io=>inputoutput: 输入/输出
st->op->cond
cond(yes)->io->e
cond(no)->sub1(right)->op
flow
st=>start: 开始
e=>end: 结束
op=>operation: 操作
sub1=>subroutine: 子程序
cond=>condition: Yes or No?
io=>inputoutput: 输入/输出
st->op->cond
cond(yes)->io->e
cond(no)->sub1(right)->op