grad.cpp: In function 'int grad(const std::string&)': grad.cpp:12: warning: 'auto' will change meaning in C++0x; please remove it grad.cpp:12: error: expected initializer before ':' token grad.cpp:14: error: expected primary-expression before 'return' grad.cpp:14: error: expected ';' before 'return' grad.cpp:14: error: expected primary-expression before 'return' grad.cpp:14: error: expected ')' before 'return'