运行 ID: 436183

Main.cc: In function ‘int main()’:
Main.cc:13:2: error: ‘len’ was not declared in this scope
  len=s1.size();
  ^~~
Main.cc:13:2: note: suggested alternative: ‘mblen’
  len=s1.size();
  ^~~
  mblen
Main.cc:13:6: error: ‘s1’ was not declared in this scope
  len=s1.size();
      ^~
Main.cc:13:6: note: suggested alternative: ‘y1’
  len=s1.size();
      ^~
      y1