Compilare: user.cpp: In function ‘int binary_search(int)’: user.cpp:15:24: warning: unused variable ‘rez’ [-Wunused-variable] int pas=1 << L, r=0, rez=0, i, j; ^ user.cpp:15:31: warning: unused variable ‘i’ [-Wunused-variable] int pas=1 << L, r=0, rez=0, i, j; ^ user.cpp:15:34: warning: unused variable ‘j’ [-Wunused-variable] int pas=1 << L, r=0, rez=0, i, j; ^ user.cpp: In function ‘int main()’: user.cpp:29:27: warning: unused variable ‘c’ [-Wunused-variable] int i, j, sum=0, rez=0, c; ^