运行 ID: 40084

Main.cc: In function ‘int main()’:
Main.cc:11:7: warning: statement has no effect [-Wunused-value]
      a==a*x;
      ~^~~~~
Main.cc:15:2: error: ‘re’ was not declared in this scope
  re
  ^~
Main.cc:15:2: error: expected ‘}’ at end of input