Compilare: user.cpp: In function ‘int f(int, int)’: user.cpp:92:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp:69:41: warning: ‘y0’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(drum[i][j] == drum[x0][y0]) ^ user.cpp:69:41: warning: ‘x0’ may be used uninitialized in this function [-Wmaybe-uninitialized]