Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
143016 伊建润 02长方形的面积 C++ Compile Error 0 MS 0 KB 116 2026-01-11 17:46:14

Tests(0/0):

Code:

#include <iostream> int main() { int a, b; cin >> a >> b; cout << a * b << endl; return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:4:5: error: 'cin' was not declared in this scope
     cin >> a >> b;
     ^
Main.cc:4:5: 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:5:5: error: 'cout' was not declared in this scope
     cout << a * b << endl;
     ^
Main.cc:5:5: 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:5:22: error: 'endl' was not declared in this scope
     cout << a * b << endl;
                      ^
Main.cc:5:22: 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)
     ^