Compilare: user.cpp: In function ‘int main()’: user.cpp:14:40: warning: unused variable ‘x’ [-Wunused-variable] int m, n, i, j, s = 0, sMin = 256, x, y, dr, st = 0, suma = 0; ^ user.cpp:14:46: warning: ‘dr’ may be used uninitialized in this function [-Wmaybe-uninitialized] int m, n, i, j, s = 0, sMin = 256, x, y, dr, st = 0, suma = 0; ^ user.cpp:43:19: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] st = y - 1; ^