Troubles with defining a macro n C++ -

im trying test macro our teacher gave , reason keep getting error messages. know why? can't seem figure out.

#include <iostream> #include <string> #define die(errmsg) {cerr << errmsg << endl; exit(1);} using namespace std;   int main() {     int x;      for(;;)     {         cout <<"how you: " <endl;         cout <<"1) good\n";          cout <<"2) bad\n";          cin >> x;          if(x != 1 || x != 2)             die("invalid input");     }        return(0); } 

check loop:

    for(;;)     {         cout << "how you: " < endl;     } 

you're missing < before std::endl

    for(;;)     {         cout << "how you: " << endl;     }