Compilare: user.cpp: In function ‘int main()’: user.cpp:120:29: warning: unused variable ‘b’ [-Wunused-variable] int b = (it->b - 1) / i + 1; ^ user.cpp:122:29: warning: unused variable ‘d’ [-Wunused-variable] int d = (it->d - 1) / i + 1; ^ user.cpp: In member function ‘void inputReader::getBuffer()’: user.cpp:26:47: 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, bufferDim, stdin); ^