Compilare: main.cpp: In function 'int main()': main.cpp:124:42: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::size_t {aka long unsigned int}' [-Wformat=] printf("%d\n", dep[i].count() - 1); ^ main.cpp:87:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("colonii.out","w",stdout); ^ main.cpp: In constructor 'Buffer::Buffer(std::__cxx11::string, int)': main.cpp:23:46: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen(name.c_str(), "r", stdin); ^ main.cpp: In member function 'void Buffer::refill()': main.cpp:54:43: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(&data[0], 1, dim, stdin); ^