Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
137315 xyc 07判断正负数 C++ Compile Error 0 MS 0 KB 203 2025-11-17 16:12:12

Tests(0/0):

Code:

#include <iostream> using namespace std; int main() { int a; cin >> a >> 0; if (a > o) { cout << a << yes; } else { cout << a << no; } return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:6:13: error: ambiguous overload for 'operator>>' (operand types are 'std::basic_istream::__istream_type {aka std::basic_istream}' and 'int')
    cin >> a >> 0;
             ^
In file included from /usr/include/c++/5/iostream:40:0,
                 from Main.cc:1:
/usr/include/c++/5/istream:120:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream]
       operator>>(__istream_type& (*__pf)(__istream_type&))
       ^
/usr/include/c++/5/istream:124:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream; std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios]
       operator>>(__ios_type& (*__pf)(__ios_type&))
       ^
/usr/include/c++/5/istream:131:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream]
       operator>>(ios_base& (*__pf)(ios_base&))
       ^
/usr/include/c++/5/istream:259:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char; _Traits = std::char_traits; std::basic_istream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf]
       operator>>(__streambuf_type* __sb);
       ^
/usr/include/c++/5/istream:803:5: note: candidate: std::basic_istream& std::operator>>(std::basic_istream&, unsigned char*) [with _Traits = std::char_traits]
     operator>>(basic_istream& __in, unsigned char* __s)
     ^
/usr/include/c++/5/istream:808:5: note: candidate: std::basic_istream& std::operator>>(std::basic_istream&, signed char*) [with _Traits = std::char_traits]
     operator>>(basic_istream& __in, signed char* __s)
     ^
Main.cc:8:12: error: 'o' was not declared in this scope
    if (a > o) {
            ^
Main.cc:9:21: error: 'yes' was not declared in this scope
        cout << a << yes;
                     ^
Main.cc:11:21: error: 'no' was not declared in this scope
        cout << a << no;
                     ^