Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
156523 熊泊彧 输出成绩等级II C++ Compile Error 0 MS 0 KB 252 2026-06-28 15:18:39

Tests(0/0):

Code:

#include<bits/stdc++.h> using namespace std; int main(){ int a,; cin>>a; switch(a) { case a>=90:cout<<'A';break; case a>=70:cout<<'B';break; case a>=60:cout<<'C';break; case 60>=a:cout<<'D';break; } return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:4:8: error: expected unqualified-id before ';' token
  int a,;
        ^
Main.cc:8:14: error: the value of 'a' is not usable in a constant expression
      case a>=90:cout<<'A';break;
              ^
Main.cc:4:6: note: 'int a' is not const
  int a,;
      ^
Main.cc:8:14: error: the value of 'a' is not usable in a constant expression
      case a>=90:cout<<'A';break;
              ^
Main.cc:4:6: note: 'int a' is not const
  int a,;
      ^
Main.cc:9:14: error: the value of 'a' is not usable in a constant expression
      case a>=70:cout<<'B';break;
              ^
Main.cc:4:6: note: 'int a' is not const
  int a,;
      ^
Main.cc:9:14: error: the value of 'a' is not usable in a constant expression
      case a>=70:cout<<'B';break;
              ^
Main.cc:4:6: note: 'int a' is not const
  int a,;
      ^
Main.cc:10:14: error: the value of 'a' is not usable in a constant expression
      case a>=60:cout<<'C';break;
              ^
Main.cc:4:6: note: 'int a' is not const
  int a,;
      ^
Main.cc:10:14: error: the value of 'a' is not usable in a constant expression
      case a>=60:cout<<'C';break;
              ^
Main.cc:4:6: note: 'int a' is not const
  int a,;
      ^
Main.cc:11:15: error: the value of 'a' is not usable in a constant expression
      case 60>=a:cout<<'D';break;
               ^
Main.cc:4:6: note: 'int a' is not const
  int a,;
      ^
Main.cc:11:15: error: the value of 'a' is not usable in a constant expression
      case 60>=a:cout<<'D';break;
               ^
Main.cc:4:6: note: 'int a' is not const
  int a,;
      ^