/in/foo.cc: In function 'int main()':
/in/foo.cc:9:22: error: expected primary-expression before '<' token
             cout<<x<<<" "<<y<<" "<<z<<endl;
                      ^
/in/foo.cc:9:26: error: invalid operands of types 'const char [2]' and 'int' to binary 'operator<<'
             cout<<x<<<" "<<y<<" "<<z<<endl;
                       ~~~^~~