Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
112775 常钰杰 判断素数 C++ Compile Error 0 MS 0 KB 488 2025-03-11 21:42:10

Tests(0/0):

Code:

#include<iostream> using namespace std; long long Pd(long long a) { if(a==1) { flag=0; return flag; } else if(a==2) { flag=1; return flag; } else { for(int i=2;i<a;i++) { if(a%i==0) { flag=0; break; return flag; } else { continue; } } } return flag; } int main() { long long a; int flag=1; cin>>a; if(Pd(a)==1) { cout<<"Yes"; } else { cout<<"No"; } return 0; }

Run Info:

Main.cc: In function 'long long int Pd(long long int)':
Main.cc:10:3: error: 'flag' was not declared in this scope
   flag=0;
   ^
Main.cc:15:3: error: 'flag' was not declared in this scope
   flag=1;
   ^
Main.cc:24:5: error: 'flag' was not declared in this scope
     flag=0;
     ^
Main.cc:34:9: error: 'flag' was not declared in this scope
  return flag;
         ^
Main.cc: In function 'int main()':
Main.cc:40:6: warning: unused variable 'flag' [-Wunused-variable]
  int flag=1;
      ^