Checking if open function is NULL and ifstream object's fail : ifstream « File « C++

Home C++ 1. Bitset 2. Class 3. Console 4. Data Structure 5. Data Type 6. Deque 7. Development 8. File 9. Function 10. Generic 11. Language 12. List 13. Map Multimap 14. Overload 15. Pointer 16. Qt 17. Queue Stack 18. Set Multiset 19. STL Algorithms Binary search 20. STL Algorithms Heap 21. STL Algorithms Helper 22. STL Algorithms Iterator 23. STL Algorithms Merge 24. STL Algorithms Min Max 25. STL Algorithms Modifying sequence operations 26. STL Algorithms Non modifying sequence operations 27. STL Algorithms Sorting 28. STL Basics 29. String 30. Valarray 31. Vector C / ANSI-C C Tutorial C++ Tutorial Visual C++ .NET

C++ » File » ifstream Screenshots  Checking if open function is NULL and ifstream object's fail    #include <fstream> #include <iostream> using namespace std; int main () {    ifstream infile;    infile.open("students.dat");    cout << "(infile) = " << infile << endl;    cout << "(infile.fail()) = " << infile.fail() << endl;    return 0; }                               Related examples in the same category 1. ifstream.ignore: Ignore up to 10 characters or until first space is found. 2. Check status: EOF encountered, Non-Fatal I/O error, Fatal I/O error 3. The ignore( ) Function 4. Display a file backwards on the screen: seekg(0, ios::end),tellg() 5. the use of both checking if the ifstream object used to call the open function is NULL and whether the ifstream object's fail member function returns true 6. Get Third Type 7. file input with characters 8. Use while loop to read file content 9. displays the contents of a file beginning with the location you specify on the command line. 10. ignore( ) reads and discards characters from the input stream. 11. Use the getline function with the C++ string class 12. Copy files with char buffer