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  1. // Attached: HW_6a
  2. // ===========================================================
  3. // File: HW_6a.cpp
  4. // ===========================================================
  5. // Programmer: Elaine Torrez
  6. // Class: CS 1A
  7. // ===========================================================
  8.  
  9. #include <iostream>
  10. #include <fstream>
  11.  
  12. using namespace std;
  13.  
  14.  
  15. // ==== main ===================================================
  16. // This program reads numbers from the data.txt file and
  17. // displays them on the screen.
  18. //
  19. // Input:
  20. // data.txt - A text file containing integer values.
  21. //
  22. // Output:
  23. // The numbers in the file are displayed on the screen.
  24. // ===========================================================
  25.  
  26. int main()
  27. {
  28.     ifstream inFile;
  29.     int number;
  30.  
  31.     // open the file for reading
  32.     inFile.open("data.txt");
  33.  
  34.     // check if the file opened successfully
  35.     if (!inFile)
  36.     {
  37.         cout << "Error opening file!" << endl;
  38.         return 0;
  39.     }
  40.  
  41.     cout << "Here are the numbers in the file:" << endl;
  42.  
  43.     // read and display each number in the file
  44.     while (inFile >> number)
  45.     {
  46.         cout << number << endl;
  47.     }
  48.  
  49.     inFile.close();
  50.  
  51.     cout << "Press any key to continue . . .";
  52.     cin.get();
  53.  
  54.     return 0;
  55.  
  56. } // end of main()
  57.  
  58. // ===========================================================
Success #stdin #stdout 0s 5320KB
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stdin
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12
7
25
3
19
stdout
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Error opening file!
https://ideone.com/ThQbAt
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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