Compilare: user.cpp: In function ‘int pivot(int, int)’: user.cpp:22:18: warning: ‘mx’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (x1+x2+x3-mx-mn); ^ user.cpp:22:24: warning: ‘mn’ may be used uninitialized in this function [-Wmaybe-uninitialized] return (x1+x2+x3-mx-mn); ^