Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
139959 向运淇 09闰年第n个月有多少天 C++ Compile Error 0 MS 0 KB 632 2025-12-13 12:13:37

Tests(0/0):

Code:

#include<iostream> uslng namespace std; int main(){ int n; cin>>n; switch(n){ case 1: case 3: case 5: case 7: case 8: case 10: case 12: cout<<31; break; case 4: case 6: case 9: case 11: cout<<30; break; case 2: cout<<29; break; default: cout<<"lnvalid."; } return 0; }

Run Info:

Main.cc:2:1: error: 'uslng' does not name a type
 uslng namespace std;
 ^
Main.cc: In function 'int main()':
Main.cc:5:5: error: 'cin' was not declared in this scope
     cin>>n;
     ^
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:14:21: error: 'cout' was not declared in this scope
                     cout<<31;
                     ^
Main.cc:14:21: 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
                  ^