String Slicer in C++

string_slicer.cpp

#include <Rcpp.h>
#include <iostream>

using namespace Rcpp;
using namespace std;
.
// [[Rcpp::export]]
std::string string_slicer( std::string input, std::vector< int > start, std::vector< int > end) {
  std::string working_copy = input;
  for(std::vector<int>::size_type i = start.size() - 1; i != (std::vector<int>::size_type) -1; i--) {
    working_copy.erase(start[i]-1, (end[i] - start[i])+1);.
  }

  return working_copy;
}