Online Judge
| Run ID | 作者 | 问题 | 语言 | 测评结果 | Time | Memory | 代码长度 | 提交时间 |
|---|---|---|---|---|---|---|---|---|
| 155590 | zyh | 逆序输出 | C++ | Compile Error | 0 MS | 0 KB | 200 | 2026-06-08 16:30:16 |
Tests(0/0):
Code:
#include <iostream> using namespace std; int main(){ int n; cin>>n; int a[n]; for(int i=0;i<n;i++){ cin>>a[i]; } for(int i=n-1;i>=0;i--){ cin>>a[i]<<""; } }
Run Info:
Main.cc: In function 'int main()':
Main.cc:11:15: error: no match for 'operator<<' (operand types are 'std::basic_istream::__istream_type {aka std::basic_istream}' and 'const char [1]')
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/string:52:0,
from /usr/include/c++/5/bits/locale_classes.h:40,
from /usr/include/c++/5/bits/ios_base.h:41,
from /usr/include/c++/5/ios:42,
from /usr/include/c++/5/ostream:38,
from /usr/include/c++/5/iostream:39,
from Main.cc:1:
/usr/include/c++/5/bits/basic_string.h:5172:5: note: candidate: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
operator<<(basic_ostream<_CharT, _Traits>& __os,
^
/usr/include/c++/5/bits/basic_string.h:5172:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/bits/ios_base.h:46:0,
from /usr/include/c++/5/ios:42,
from /usr/include/c++/5/ostream:38,
from /usr/include/c++/5/iostream:39,
from Main.cc:1:
/usr/include/c++/5/system_error:209:5: note: candidate: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)
operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e)
^
/usr/include/c++/5/system_error:209:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:497:5: note: candidate: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)
operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
^
/usr/include/c++/5/ostream:497:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:502:5: note: candidate: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)
operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
^
/usr/include/c++/5/ostream:502:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:508:5: note: candidate: template std::basic_ostream& std::operator<<(std::basic_ostream&, char)
operator<<(basic_ostream& __out, char __c)
^
/usr/include/c++/5/ostream:508:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:514:5: note: candidate: template std::basic_ostream& std::operator<<(std::basic_ostream&, signed char)
operator<<(basic_ostream& __out, signed char __c)
^
/usr/include/c++/5/ostream:514:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:519:5: note: candidate: template std::basic_ostream& std::operator<<(std::basic_ostream&, unsigned char)
operator<<(basic_ostream& __out, unsigned char __c)
^
/usr/include/c++/5/ostream:519:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:539:5: note: candidate: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*)
operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
^
/usr/include/c++/5/ostream:539:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/ostream:638:0,
from /usr/include/c++/5/iostream:39,
from Main.cc:1:
/usr/include/c++/5/bits/ostream.tcc:321:5: note: candidate: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*)
operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
^
/usr/include/c++/5/bits/ostream.tcc:321:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:556:5: note: candidate: template std::basic_ostream& std::operator<<(std::basic_ostream&, const char*)
operator<<(basic_ostream& __out, const char* __s)
^
/usr/include/c++/5/ostream:556:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:569:5: note: candidate: template std::basic_ostream& std::operator<<(std::basic_ostream&, const signed char*)
operator<<(basic_ostream& __out, const signed char* __s)
^
/usr/include/c++/5/ostream:569:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:574:5: note: candidate: template std::basic_ostream& std::operator<<(std::basic_ostream&, const unsigned char*)
operator<<(basic_ostream& __out, const unsigned char* __s)
^
/usr/include/c++/5/ostream:574:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream'
cin>>a[i]<<"";
^
In file included from /usr/include/c++/5/iostream:39:0,
from Main.cc:1:
/usr/include/c++/5/ostream:628:5: note: candidate: template std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&)
operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
^
/usr/include/c++/5/ostream:628:5: note: template argument deduction/substitution failed:
Main.cc:11:17: note: 'std::basic_istream::__istream_type {aka std::basic_istream}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
cin>>a[i]<<"";
^