Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
139958 王显端 09闰年第n个月有多少天 C++ Compile Error 0 MS 0 KB 333 2025-12-13 12:13:02

Tests(0/0):

Code:

#include<iostream> using 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; break; } return 0;

Run Info:

Main.cc: In function 'int main()':
Main.cc:27:8: error: 'lnvalid' was not declared in this scope
  cout<