Compilare: user.cpp: In function ‘void compute(long long int (*)[2], int)’: user.cpp:32:15: warning: unused variable ‘x’ [-Wunused-variable] long long x[2][2] = {{0, 1}, {1, 1}}; ^ user.cpp: In function ‘int main()’: user.cpp:69:15: warning: unused variable ‘x’ [-Wunused-variable] long long x[2][2] = {{1, 2}, {3, 4}}; ^ user.cpp:70:15: warning: unused variable ‘y’ [-Wunused-variable] long long y[2][2] = {{1, 2}, {3, 4}}; ^ user.cpp:71:15: warning: unused variable ‘z’ [-Wunused-variable] long long z[2][2]; ^