gradina.cpp: In function 'int main()': gradina.cpp:20: error: 'struct std::string' has no member named 'back' gradina.cpp:53: warning: 'auto' will change meaning in C++0x; please remove it gradina.cpp:53: error: expected initializer before ':' token gradina.cpp:56: error: expected primary-expression before 'return' gradina.cpp:56: error: expected ';' before 'return' gradina.cpp:56: error: expected primary-expression before 'return' gradina.cpp:56: error: expected ')' before 'return'