Compilare: user.cpp: In member function ‘void Hash::update(int, int, int)’: user.cpp:37:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = pos; i <= H[ind].size(); i += zeros(i)) ^ user.cpp: In function ‘int main()’: user.cpp:123:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < H.G[i].size(); j++) ^ user.cpp:145:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j <= H.H[i].size(); j++) H.aib[i][j] = 0; ^ user.cpp:146:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j <= H.H[i].size(); j++) H.update(i, j, 1); ^ user.cpp: In function ‘char nextch()’: user.cpp:12:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf, BUF_SIZE, 1, fi); ^