Read formatted data from a file.

  
#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main()
{
  int i, n;
  double d;
  string str;

  ifstream fin("test.dat");

  if(!fin) {
    cout << "Cannot open file.\n";
    return 1;
  }

  fin >> i;
  fin >> n;
  fin >> d;
  fin >> str;

  fin.close();

  if(!fin.good()) {
    cout << "A file error occurred.";
    return 1;
  }
  cout << i << " " << n << " " << d << " " << str << "\n";
  return 0;
}

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Read formatted data from a file. : File Read « File « C++

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