Compilare: user.cpp: In function ‘int count(int, int, int)’: user.cpp:57: warning: operation on ‘k’ may be undefined user.cpp:59: warning: operation on ‘k’ may be undefined user.cpp:63: warning: operation on ‘k’ may be undefined user.cpp: In function ‘int main()’: user.cpp:70: warning: unused variable ‘f’ user.cpp:71: warning: unused variable ‘g’ user.cpp:72: warning: unused variable ‘x’ user.cpp:72: warning: unused variable ‘y’ user.cpp:72: warning: unused variable ‘k’