/in/foo.cc: In function 'int main()':
/in/foo.cc:5:9: warning: right operand of comma operator has no effect [-Wunused-value]
 cin>>m,d;
         ^
/in/foo.cc:7:7: warning: 'd' may be used uninitialized in this function [-Wmaybe-uninitialized]
  {if(d%7==5){cout<<"Crazy Thursday V me 50";}
      ~^~