Compilare: user.cpp: In function 'int main()': user.cpp:48: warning: unused variable 'j' user.cpp: In function 'int wtfff(int, int, int, int)': user.cpp:41: warning: control reaches end of non-void function user.cpp: In function 'int main()': user.cpp:48: warning: 'P' may be used uninitialized in this function