set.cpp: In function 'void adauga(std::vector<int, std::allocator<int> >&, int)': set.cpp:12: warning: comparison between signed and unsigned integer expressions set.cpp:15: warning: comparison between signed and unsigned integer expressions set.cpp: In function 'void dubleaza(std::vector<int, std::allocator<int> >&, int)': set.cpp:33: warning: comparison between signed and unsigned integer expressions set.cpp:35: warning: comparison between signed and unsigned integer expressions set.cpp: In function 'void sum(std::vector<int, std::allocator<int> >&, std::vector<int, std::allocator<int> >&)': set.cpp:46: warning: comparison between signed and unsigned integer expressions set.cpp:47: warning: comparison between signed and unsigned integer expressions set.cpp:44: warning: 't' is used uninitialized in this function