Compilare: user.cpp: In function ‘int main()’: user.cpp:19:28: warning: unused variable ‘x’ [-Wunused-variable] int n, m, i, fin, fou, x, y,j; ^ user.cpp:19:31: warning: unused variable ‘y’ [-Wunused-variable] int n, m, i, fin, fou, x, y,j; ^ user.cpp:19:33: warning: unused variable ‘j’ [-Wunused-variable] int n, m, i, fin, fou, x, y,j; ^