运行 ID: 12227

Main.cc: In function ‘int w(int)’:
Main.cc:19:6: error: redeclaration of ‘int i’
   19 |  int i=x;
      |      ^
Main.cc:14:6: note: ‘int i’ previously declared here
   14 |  int i=x,sum=0;
      |      ^