Eroare de compilare: user.cpp:14:10: error: ‘int exp [6]’ redeclared as different kind of symbol int exp[6] = { 1, 2, 4, 8, 16, 32 }; ^ In file included from /usr/include/features.h:346:0, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/os_defines.h:39, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/c++config.h:420, from /usr/local/include/c++/4.8.0/cstdio:41, from user.cpp:1: /usr/include/bits/mathcalls.h:101:1: error: previous declaration of ‘double exp(double)’ __MATHCALL (exp,, (_Mdouble_ __x)); ^ user.cpp: In function ‘bool binary_search(long long int)’: user.cpp:49:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( i + step < v.size() && v[i + step] <= x ) ^ user.cpp: In function ‘int main()’: user.cpp:74:32: error: invalid types ‘<unresolved overloaded function type>[int]’ for array subscript x >>= exp[i]; ^