while(i++<7)会导致查询不到p[0]
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- 2年前回答 1 已采纳 #include void main() { int num=1; while (num<=2) {num++; cout<<num;} } 答案： 23
- 2年前回答 1 已采纳 #include #include char *fun(char (*a)[81],int num,char *max) { int i=0; max=a[0]; for(i=0;i<num;i++) { if(strlen(max)<strlen(a[i])) max=a[i]; } return max; } void main() { char ss[10][81],*ps; int n,i=0; cout<<"输入若干个字符串"<<endl; cin.getline(ss[i],81); while(strcmp(ss[i],"****")!=0) { i++; cin.getline(ss[i],81); } n=i; ps=fun(ss,n,ps); cout<<"最大字符串是 "<<ps<<endl; }
- 回答 3 已采纳 求解写下面JSON的代码，感谢。 {"error_code":0,"reason":"success","result":{"state":3,"uptime":"2018-08-13 21:39:14","data":[{"time":"2018-08-11 17:53:09","remark":"快件已签收，签收人是【本人】"}, {"time":"2018-08-11 08:18:10","remark":"[上海营业部]的【余鸿】正在派件, 电话：15800644202"},{"time":"2018-08-11 08:14:10","remark":"快件已到达[上海营业部],上一站是[上海营业 部]"},{"time":"2018-08-11 02:56:59","remark":"快件已由[上海分拨中心]发往[上海营业部]"},{"time":"2018-08-10 12:50:06","remark":"快件已由[上海分拨中心]发往[上海营业部]"}, {"time":"2018-08-10 12:29:04","remark":"[嘉定六部]的【嘉定六部】正在派件, 电话：13650531758"},{"time":"2018-08-10 11:53:06","remark":"快件已到达[上海分拨中心]"},{"time":"2018 -08-10 08:08:35","remark":"快件已由[嘉定六部]发往[上海分拨中心]"},{"time":"2018-08-10 08:03:44","remark":"快件已到达[嘉定六部],上一站是[上海分拨中心]"},{"time":"2018-08-10 02:39:12","remark":"快件已由[上海分拨中心]发往[嘉定六部]"},{"time":"2018-08-09 23:25:28","remark":"快件已到达[上海分拨中心],上一站是[嘉定三部]"},{"time":"2018-08-09 19:22:57","remark":"快件已由[嘉定六部]发往[上海分拨中心]"},{"time":"2018-08-09 19:22:56","remark":"[嘉定六部]【嘉定六部】已收件"},{"time":"2018-08-09 18:42:54","remark":"[嘉定 六部]【华超】已收件"}],"information":{"no":518704351463,"sName":"UC","expName":"UC优速快递","url":"http://www.uc56.com","tel":"400-1111-119","img":"https://oss- cn2.apistore.cn/exp/UC.png"}},"ordersign":"20180813215900272775252910"}
- 回答 5 已采纳 请教CSDN各大神 String字符串"|A-B|+|C-D|" 是一个绝对值运算的表达式，我通过替换 A=10,B=13,C=23,D=20得到 “|10-13|+|23-20|”字符串 我怎么在java中解析？获取结果 6？Java中ScriptEngine 支持加减乘除，但不支持|绝对值表达式 不要说通过字符串分割，如果遇到 "|A-|B-C|+A|> 11"这种通过上面替换希望返回的结果为 false，这又该怎么解析？
- 回答 8 已采纳 更新pip老是出现下列一大串的文字，我在网上查了许多方法，都没用，有哪位大佬能说一下有什么方法解决这个问题。 这是使用管理员的运行 C:\Windows\system32>python -m pip install --upgrade pip WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)")': /simple/pip/ Collecting pip Downloading https://files.pythonhosted.org/packages/54/0c/d01aa759fdc501a58f431eb594a17495f15b88da142ce14b5845662c13f3/pip-20.0.2-py2.py3-none-any.whl (1.4MB) |█████████████████████▌ | 962kB 2.9kB/s eta 0:02:44ERROR: Exception: Traceback (most recent call last): File "D:\Program Files\python\lib\site-packages\pip\_vendor\urllib3\response.py", line 397, in _error_catcher yield File "D:\Program Files\python\lib\site-packages\pip\_vendor\urllib3\response.py", line 479, in read data = self._fp.read(amt) File "D:\Program Files\python\lib\site-packages\pip\_vendor\cachecontrol\filewrapper.py", line 62, in read data = self.__fp.read(amt) File "D:\Program Files\python\lib\http\client.py", line 454, in read n = self.readinto(b) File "D:\Program Files\python\lib\http\client.py", line 498, in readinto n = self.fp.readinto(b) File "D:\Program Files\python\lib\socket.py", line 669, in readinto return self._sock.recv_into(b) File "D:\Program Files\python\lib\ssl.py", line 1241, in recv_into return self.read(nbytes, buffer) File "D:\Program Files\python\lib\ssl.py", line 1099, in read return self._sslobj.read(len, buffer) socket.timeout: The read operation timed out During handling of the above exception, another exception occurred: Traceback (most recent call last): File "D:\Program Files\python\lib\site-packages\pip\_internal\cli\base_command.py", line 188, in main status = self.run(options, args) File "D:\Program Files\python\lib\site-packages\pip\_internal\commands\install.py", line 345, in run resolver.resolve(requirement_set) File "D:\Program Files\python\lib\site-packages\pip\_internal\legacy_resolve.py", line 196, in resolve self._resolve_one(requirement_set, req) File "D:\Program Files\python\lib\site-packages\pip\_internal\legacy_resolve.py", line 359, in _resolve_one abstract_dist = self._get_abstract_dist_for(req_to_install) File "D:\Program Files\python\lib\site-packages\pip\_internal\legacy_resolve.py", line 305, in _get_abstract_dist_for abstract_dist = self.preparer.prepare_linked_requirement( File "D:\Program Files\python\lib\site-packages\pip\_internal\operations\prepare.py", line 195, in prepare_linked_requirement unpack_url( File "D:\Program Files\python\lib\site-packages\pip\_internal\download.py", line 1058, in unpack_url unpack_http_url( File "D:\Program Files\python\lib\site-packages\pip\_internal\download.py", line 920, in unpack_http_url from_path, content_type = _download_http_url(link, File "D:\Program Files\python\lib\site-packages\pip\_internal\download.py", line 1152, in _download_http_url _download_url(resp, link, content_file, hashes, progress_bar) File "D:\Program Files\python\lib\site-packages\pip\_internal\download.py", line 861, in _download_url hashes.check_against_chunks(downloaded_chunks) File "D:\Program Files\python\lib\site-packages\pip\_internal\utils\hashes.py", line 75, in check_against_chunks for chunk in chunks: File "D:\Program Files\python\lib\site-packages\pip\_internal\download.py", line 829, in written_chunks for chunk in chunks: File "D:\Program Files\python\lib\site-packages\pip\_internal\utils\ui.py", line 156, in iter for x in it: File "D:\Program Files\python\lib\site-packages\pip\_internal\download.py", line 794, in resp_read for chunk in resp.raw.stream( File "D:\Program Files\python\lib\site-packages\pip\_vendor\urllib3\response.py", line 531, in stream data = self.read(amt=amt, decode_content=decode_content) File "D:\Program Files\python\lib\site-packages\pip\_vendor\urllib3\response.py", line 496, in read raise IncompleteRead(self._fp_bytes_read, self.length_remaining) File "D:\Program Files\python\lib\contextlib.py", line 131, in __exit__ self.gen.throw(type, value, traceback) File "D:\Program Files\python\lib\site-packages\pip\_vendor\urllib3\response.py", line 402, in _error_catcher raise ReadTimeoutError(self._pool, None, 'Read timed out.') pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out. WARNING: You are using pip version 19.2.3, however version 20.0.2 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' command.
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