Rinside问题，求大侠帮助

xuyanzc

由于R语言的FOR循环效率问题，最近想把循环改为C++版本，思路如下：
最外围程序是R，执行语句中FOR循环部分用RCPP，C++改写，FOR循环内部还需要调用R的函数，因此又要用到Rinside，在Rinside里再调用原来的R函数。示例代码如下：
more demo.r

library(Rcpp)
aa <- function(xx)
{
   return(xx)
}
sourceCpp(file='demo1.cpp')
ddd <- hello1("ccc")
print(ddd)


[root@C0011 parallel]# more demo1.cpp
#include <Rcpp.h>
#include <string>
#include <RInside.h>

using namespace std;
using namespace Rcpp;

//[[Rcpp::export]]

string hello1(string dd)
{

  RInside R();      
  R["txt"] = "Hello, world!\n";   
  Rcpp::Character xxx = R.parseEvalQ("aa(txt)");

  return xxx;
}


执行，出错，确实不太熟悉这个流程怎么做，各位大侠帮助下哦，多谢
Rscript demo.r
demo1.cpp: In function ?.td::string hello1(std::string)?.
demo1.cpp:14:10: error: invalid types ?.Inside()[const char [4]]?.for array subscript
   R["txt"] = "Hello, world!\n";   
          ^
demo1.cpp:15:3: error: ?.haracter?.is not a member of ?.cpp?
   Rcpp::Character xxx = R.parseEvalQ("aa(txt)");
   ^
demo1.cpp:15:19: error: expected ?.?.before ?.xx?
   Rcpp::Character xxx = R.parseEvalQ("aa(txt)");
                   ^
demo1.cpp:17:10: error: ?.xx?.was not declared in this scope
   return xxx;
          ^
make: *** [demo1.o] Error 1
g++ -I/usr/local/lib64/R/include -DNDEBUG  -I/home/data2/daqi/zlib-1.2.8/include -I/home/data2/daqi/bzip2-1.0.6/include -I/home/data2/daqi/xz-5.2.2/include -I/home/data2/daqi/pcre-8.39/include -I/home/data2/daqi/curl-7.51.0/include  -I"/usr/local/lib64/R/library/Rcpp/include" -I"/home/xuyan/R/parallel"   -fpic  -g -O2  -c demo1.cpp -o demo1.o
Error in sourceCpp(file = "demo1.cpp") :
  Error 1 occurred building shared library.
Execution halted