我正在試圖爲一些基於C的稀疏矩陣處理代碼打包（請參閱previous question）。爲了調用的主力C函數，我需要創建看起來像這樣的結構： struct smat {
long rows;
long cols;
long vals; /* Total non-zero entries. */
long *pointr; /* For each col
我想使用RInside編譯R代碼。但是在使用函數read.csv時出現錯誤。下面的代碼片段給出： include "RInside.h"
include <iomanip>
include <iostream>
include <fstream>
include <string>
include <vector>
include <sstream>
using namespace