/in/foo.cc:3:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:26:3: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   else
   ^~~~
/in/foo.cc:28:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
    cout<<day<<endl; 
    ^~~~