Compilare: user.cpp: In function ‘int main()’: user.cpp:123:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<candidati.size() && needed; i++) ^ user.cpp: In member function ‘void inputReader::get_buffer()’: user.cpp:22:41: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,buffer_dim,stdin); ^ user.cpp: In member function ‘void inputReader::get_INT(int&)’: user.cpp:48:9: warning: ‘semn’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (semn == '-') ^ user.cpp: In function ‘int main()’: user.cpp:48:9: warning: ‘semn’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:33:14: note: ‘semn’ was declared here char semn; ^