foo.cc: In function 'int main()':
foo.cc:16:11: error: invalid operands of types 'int' and 'const char [4]' to binary 'operator<<'
   16 |         c << "Yes";
      |         ~ ^~ ~~~~~
      |         |    |
      |         int  const char [4]
foo.cc:18:11: error: invalid operands of types 'int' and 'const char [3]' to binary 'operator<<'
   18 |         c << "No";
      |         ~ ^~ ~~~~
      |         |    |
      |         int  const char [3]

[Hydro](https://hydro.ac)提供评测服务