Compilare: user.cpp: In function ‘int main()’: user.cpp:13:15: warning: unused variable ‘p’ [-Wunused-variable] int i, j, p, v2, v1, v3, x, y; ^ user.cpp:13:30: warning: unused variable ‘x’ [-Wunused-variable] int i, j, p, v2, v1, v3, x, y; ^ user.cpp:13:33: warning: unused variable ‘y’ [-Wunused-variable] int i, j, p, v2, v1, v3, x, y; ^