Question

I want to put some text from a text file into an array, but have the text in the array as individual characters. How would I do that?

目前我有

    #include <iostream>
#include <fstream>
#include <string>
#include <cmath>
#include <vector>
#include <sstream>
using namespace std;

int main()
{
  string line;
  ifstream myfile ("maze.txt");
  if (myfile.is_open())
  {
    while ( myfile.good() )
    {
      getline (myfile,line);
      // --------------------------------------
      string s(line);
      istringstream iss(s);

    do
    {
        string sub;
        iss >> sub;
        cout << "Substring: " << sub << endl;
    } while (iss);
// ---------------------------------------------
    }
    myfile.close();
  }
  else cout << "Unable to open file"; 
  system ("pause");
  return 0;
}

I m guessing getline gets one line at a time. Now how would I split that line into individual characters, and then put those characters in an array? I am taking a C++ course for the first time so I m new, be nice :p

Answer 1

std::ifstream file("hello.txt");
if (file) {
  std::vector<char> vec(std::istreambuf_iterator<char>(file),
                        (std::istreambuf_iterator<char>()));
} else {
  // ...
}

与使用循环和回推手法的手工方法相比,非常优雅。

Answer 2

#include <vector>
#include <fstream>

int main() {
  std::vector< char > myvector;
  std::ifstream myfile("maze.txt");

  char c;

  while(myfile.get(c)) {
    myvector.push_back(c);
  }
}

友情链接