C ++读取数字行 [英] C++ read line of numbers

问题描述

阅读数字行并将这些数字存储在向量中的标准方法是什么。

  file.in 
 12 
 12 9 8 17 101 2 
  

class =h2_lin>解决方案

  #include< vector> 
 #include< fstream> 
 #include  #include< algorithm> 
 
 std :: vector< int>数据; 
 std :: ifstream file（numbers.txt）; 
 std :: copy（std :: istream_iterator< int>（file），std :: istream_iterator< int>（），std :: back_inserter 
  

What's the standard way of reading a "line of numbers" and store those numbers inside a vector.

file.in
12 
12 9 8 17 101 2 

Should I read the file line by line, split the line with multiple numbers, and store the tokens in the array ?

What should I use for that ?

解决方案

#include <vector>
#include <fstream>
#include <iterator>
#include <algorithm>

std::vector<int> data;
std::ifstream file("numbers.txt");
std::copy(std::istream_iterator<int>(file), std::istream_iterator<int>(), std::back_inserter(data));

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