Compilare: user.cpp: In function ‘int main()’: user.cpp:23:9: warning: unused variable ‘b’ [-Wunused-variable] int b = 0; ^ user.cpp:26:9: warning: unused variable ‘c’ [-Wunused-variable] int c = 0; ^ user.cpp:27:9: warning: unused variable ‘t2’ [-Wunused-variable] int t2 = 0; ^ user.cpp:28:9: warning: unused variable ‘k’ [-Wunused-variable] int k; ^ user.cpp:29:9: warning: unused variable ‘pw’ [-Wunused-variable] int pw; ^ user.cpp:30:9: warning: unused variable ‘sqr’ [-Wunused-variable] int sqr = sqrt(MAX); ^ user.cpp:45:10: warning: unused variable ‘f’ [-Wunused-variable] bool f = false; ^