Compilare: user.cpp: In function ‘void expo(long long int)’: user.cpp:50:18: warning: unused variable ‘j’ [-Wunused-variable] long long i, j; ^ user.cpp: In function ‘int main()’: user.cpp:61:8: warning: unused variable ‘i’ [-Wunused-variable] ll i, j, temp, t1, t2, t3; ^ user.cpp:61:11: warning: unused variable ‘j’ [-Wunused-variable] ll i, j, temp, t1, t2, t3; ^