Question

In C++, how would I read data from a .txt file into an array?

For example, I have an assignment that requires me to read temperatures from a file named data.txt into an array. How would I go about doing this?

Answer 1

/*
 *  C++ Program to read temperature values from a files into an array
 */

#include <iostream>
#include <fstream>
using namespace std;
#define MAX 100

int main()
{
  int i = 0, tempArr[MAX];

  fstream file;
  file.open("data.txt", ios :: in);

  while (!file.eof())
  {
    file >> tempArr[i++];
  }

  int count = i;

  for (i = 0; i < count; i++)
  {
    cout << tempArr[i] << endl;
  }

  file.close();
  
  return 0;
}