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  1. // Attached: HW_6e
  2. // ===========================================================
  3. // File: HW_6e.cpp
  4. // ===========================================================
  5. // Programmer: Elaine Torrez
  6. // Class: CS 1A
  7. // ===========================================================
  8.  
  9. #include <iostream>
  10. #include <fstream>
  11. #include <string>
  12. #include <cstring>
  13. #include <iomanip>
  14.  
  15. using namespace std;
  16.  
  17. struct Cat
  18. {
  19.     char name[20];
  20.     int age;
  21. };
  22.  
  23.  
  24. // ==== main ===================================================
  25. // This program prompts the user to enter one more cat record
  26. // and appends it to the critters.bin file. Then it reads and
  27. // displays all 4 cat records.
  28. //
  29. // Input:
  30. // 1 cat name and 1 cat age entered by the user.
  31. // critters.bin - A binary file containing Cat objects.
  32. //
  33. // Output:
  34. // All 4 cat records are displayed in columns.
  35. // ===========================================================
  36.  
  37. int main()
  38. {
  39.     ifstream inFile;
  40.     ofstream outFile;
  41.     Cat cat;
  42.     int count;
  43.     string tempName;
  44.  
  45.     count = 0;
  46.  
  47.     // open the binary file in append mode
  48.     outFile.open("critters.bin", ios::binary | ios::app);
  49.  
  50.     cout << "Enter one more cat" << endl;
  51.  
  52.     cout << "NAME:  ";
  53.     getline(cin, tempName);
  54.     strcpy(cat.name, tempName.c_str());
  55.  
  56.     cout << "AGE:  ";
  57.     cin >> cat.age;
  58.     cin.ignore();
  59.  
  60.     // append one Cat object to the binary file
  61.     outFile.write(reinterpret_cast<char *>(&cat), sizeof(cat));
  62.  
  63.     outFile.close();
  64.  
  65.     // open the binary file for reading
  66.     inFile.open("critters.bin", ios::binary);
  67.  
  68.     cout << endl;
  69.     cout << "Here is a list of all cats:" << endl;
  70.  
  71.     // read and display all 4 Cat objects
  72.     while (count < 4)
  73.     {
  74.         inFile.read(reinterpret_cast<char *>(&cat), sizeof(cat));
  75.         cout << setw(10) << left << cat.name << cat.age << endl;
  76.         count = count + 1;
  77.     }
  78.  
  79.     inFile.close();
  80.  
  81.     cout << endl;
  82.     cout << "Press any key to continue . . .";
  83.     cin.get();
  84.  
  85.     return 0;
  86.  
  87. } // end of main()
  88.  
  89. // ===========================================================
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
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NAME:  Luna
AGE:  4
stdout
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Enter one more cat
NAME:  AGE:  
Here is a list of all cats:
NAME:  Luna0
NAME:  Luna0
NAME:  Luna0
NAME:  Luna0

Press any key to continue . . .
https://ideone.com/OT5EDD
language:
C++ (gcc 8.3)
created:
11 hours ago
visibility:
public

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