Compilare: user.cpp: In function ‘void sari(int)’: user.cpp:47:16: warning: unused variable ‘k’ [-Wunused-variable] int i,nr,j,k; ^ user.cpp: In function ‘int main()’: user.cpp:60:15: warning: variable ‘sol’ set but not used [-Wunused-but-set-variable] int i,t,k,sol,nu_sol,j,nr; ^ user.cpp:61:10: warning: unused variable ‘ch’ [-Wunused-variable] char ch; ^ user.cpp: In function ‘int biti(int)’: user.cpp:36:1: warning: control reaches end of non-void function [-Wreturn-type] } ^