Compilare: user.cpp: In function ‘int main()’: user.cpp:22:9: warning: unused variable ‘T’ [-Wunused-variable] int T, a, b, x, y, d, i, c; ^ user.cpp:22:27: warning: unused variable ‘i’ [-Wunused-variable] int T, a, b, x, y, d, i, c; ^ user.cpp:22:30: warning: unused variable ‘c’ [-Wunused-variable] int T, a, b, x, y, d, i, c; ^