Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
123579 王镜铭 13求7个数的平均数 C++ Compile Error 0 MS 0 KB 146 2025-07-06 13:23:34

Tests(0/0):

Code:

#include<bits/stdc++.h> using namespace std; int main(){ int a,b; for(int x=1;x<=7;x++){ cin<<a; b+=a; } cout<<b/7; return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:6:6: error: no match for 'operator<<' (operand types are 'std::istream {aka std::basic_istream}' and 'int')
   cin<
Main.cc:6:6: note:   no known conversion for argument 1 from 'std::istream {aka std::basic_istream}' to 'int'
In file included from /usr/include/c++/5/regex:61:0,
                 from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:108,
                 from Main.cc:1:
/usr/include/c++/5/bits/regex.h:1480:5: note: candidate: template std::basic_ostream<_CharT, _Traits>& std::__cxx11::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__cxx11::sub_match<_Bi_iter>&)
     operator<<(basic_ostream<_Ch_type, _Ch_traits>& __os,
     ^
/usr/include/c++/5/bits/regex.h:1480:5: note:   template argument deduction/substitution failed:
Main.cc:6:8: note:   'std::istream {aka std::basic_istream}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
   cin<