compile error

I'm having trouble trying to figure out what the compile error is for my program. When i compile my program [it's a class by the way] i get this message:

Code:

g++ Date.cpp driver.cpp
Date.cpp: In member function `void Date::display(std::ostream&) const':
Date.cpp:72: error: invalid operands of types `const char[1]' and `const int' to
 binary `operator<<'
Date.cpp:73: error: invalid operands of types `const char[1]' and `const int' to
 binary `operator<<'
Date.cpp:73: error: expected `)' before ';' token
Date.cpp:73: error: expected `)' before ';' token

anyone know what could be the matter? The code is long, so if it'll help, I can post it when requested.

Thank you

nevermind, i figured it out. sorry for the inconvenience