#include <iostream>
using namespace std
int main()
{ 
   float a = 4.90867e-2;
   int b = 0xE124;
   int c = 0167;
   // comment1
   cout<<"Hello ! "<<endl;
   /*
   comment2 
   123 456 int
   */
   cout<<"Welcome to c++! "<<endl;
   return 0;
}