Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
139945 孔声豪 09闰年第n个月有多少天 C++ Compile Error 0 MS 0 KB 705 2025-12-13 11:57:28

Tests(0/0):

Code:

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

Run Info:

Main.cc: In function 'int main()':
Main.cc:45:13: error: 'lnvalid' was not declared in this scope
       cout<