How to read a file into an array line by line c++? -

i've written code , file read contains 3 multiple choice questions. program works fine , can store answers there problem. need randomize order of questions every time compile. way read file in arrays. can't seem figure out how that. appreciated. p.s i'm new c++

#include <iostream> #include <string> #include <fstream>  using namespace  std; int main() {      char c;     char d;     string line_;     ifstream file_("mpchoice.txt");      if (file_.is_open())     {         while (getline(file_, line_))         {             cout << line_ << '\n';         }         file_.close();     }      cout << "what response number 1\n";     cin >> c;      if (c == 'a')         cout << "that's wrong\n";     cout << "what's response second question\n";     cin >> d;      if (d == 'a'){         cout << "that's correct\n";     }     else         cout << "that's wrong\n";       return 0; } 

you can first put every line std::vector<std::string> (reference) <vector> header:

ifstream file_("mpchoice.txt"); vector<string> lines;  if (file_.is_open()) {     while (getline(file_, line_))     {         cout << line_ << '\n';         lines.push_back(line_);     }     file_.close(); } 

and use std::random_shuffle (reference) <algorithm> header:

random_shuffle(lines.begin(), lines.end()); 

here's example demonstrates use of these standard library facilities.