cpp primer 习题 11.18

#include <iostream>#include<fstream>#include <iterator>#include <algorithm>using namespace std;int main(){ofstream oddFile("oddFile.dat");ofstream evenFile("evenfile.dat");//打开文件失败if (!oddFile||!evenFile){cerr<<"Can not open output file!"<<endl;return EXIT_FAILURE;}cout<<"Enter some integers:"<<endl;istream_iterator<int> inIter(cin), eof;ostream_iterator<int> outOddIter(oddFile," ");ostream_iterator<int> outEvenIter(evenFile," ");//读入整数直至遇到eof，写入文件流//并将相应迭代器加1while (inIter!=eof){if (*inIter%2!=0){*outOddIter=*inIter;++outOddIter;}else{*outEvenIter=*inIter;++outOddIter;}++inIter;}oddFile.close();evenFile.close();return 0;}