最新回答 / mopery
info sed =>`-n'`--quiet'`--silent' By default, `sed' prints out the pattern space at the end of each cycle through the script (*note How `sed' works: Execution Cycle.). These options disable this automatic printing, and `sed' only produ...
2016-01-03
最新回答 / 慕丝4451603
我理解的是半圆朝下,输入代码,也得到了这样的图形,但是咧,答案不对,所以就不知道到底是什么样的半圆了,在题目里给个图示可能会好些aluupmavcht
2015-08-23