Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
143012 伊建润 02数字拼接 C++ Compile Error 0 MS 0 KB 242 2026-01-11 17:44:51

Tests(0/0):

Code:

#include <iostream> #include <string> int main() { int num1, num2; cin >> num1 >> num2; string str = to_string(num1) + to_string(num2); int result = stoi(str) * stoi(str); cout << result << endl; return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:5:5: error: 'cin' was not declared in this scope
     cin >> num1 >> num2;
     ^
Main.cc:5:5: note: suggested alternative:
In file included from Main.cc:1:0:
/usr/include/c++/5/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^
Main.cc:6:5: error: 'string' was not declared in this scope
     string str = to_string(num1) + to_string(num2);
     ^
Main.cc:6:5: note: suggested alternatives:
In file included from /usr/include/c++/5/iosfwd:39:0,
                 from /usr/include/c++/5/ios:38,
                 from /usr/include/c++/5/ostream:38,
                 from /usr/include/c++/5/iostream:39,
                 from Main.cc:1:
/usr/include/c++/5/bits/stringfwd.h:74:33: note:   'std::__cxx11::string'
   typedef basic_string    string;   
                                 ^
/usr/include/c++/5/bits/stringfwd.h:74:33: note:   'std::__cxx11::string'
Main.cc:7:23: error: 'str' was not declared in this scope
     int result = stoi(str) * stoi(str);
                       ^
Main.cc:7:26: error: 'stoi' was not declared in this scope
     int result = stoi(str) * stoi(str);
                          ^
Main.cc:7:26: note: suggested alternatives:
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:5361:3: note:   'std::__cxx11::stoi'
   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^
/usr/include/c++/5/bits/basic_string.h:5361:3: note:   'std::__cxx11::stoi'
Main.cc:8:5: error: 'cout' was not declared in this scope
     cout << result << endl;
     ^
Main.cc:8:5: note: suggested alternative:
In file included from Main.cc:1:0:
/usr/include/c++/5/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
Main.cc:8:23: error: 'endl' was not declared in this scope
     cout << result << endl;
                       ^
Main.cc:8:23: note: suggested alternative:
In file included from /usr/include/c++/5/iostream:39:0,
                 from Main.cc:1:
/usr/include/c++/5/ostream:590:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^