Compile Error
/in/foo.cc: In function 'int main()':
/in/foo.cc:12:10: error: 'YES' was not declared in this scope
cout<<YES<<endl;
^~~
/in/foo.cc:14:10: error: 'NO' was not declared in this scope
cout<<NO<<endl;
^~
/in/foo.cc: In function 'int main()':
/in/foo.cc:12:10: error: 'YES' was not declared in this scope
cout<<YES<<endl;
^~~
/in/foo.cc:14:10: error: 'NO' was not declared in this scope
cout<<NO<<endl;
^~
