Compilare: user.cpp: In function ‘void bs(int, int, int)’: user.cpp:9:9: warning: unused variable ‘dr’ [-Wunused-variable] { int y,dr=d; ^ user.cpp: In function ‘int main()’: user.cpp:25:13: warning: variable ‘ct’ set but not used [-Wunused-but-set-variable] { int i,j,ct,s,d; ^ user.cpp:25:16: warning: unused variable ‘s’ [-Wunused-variable] { int i,j,ct,s,d; ^