Help check my notes.

This is a discussion on Help check my notes. within the C++ Programming forums, part of the General Programming Boards category; I try to keep up but I must have written down something wrong. I get error C2661: 'std::basic_ifstream<_Elem,_Traits>: pen' : ...

  1. #1
    MB1
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    Help check my notes.

    I try to keep up but I must have written down something wrong.

    I get error C2661: 'std::basic_ifstream<_Elem,_Traits>:pen' : no overloaded function takes 0 arguments
    with
    [
    _Elem=char,
    _Traits=std::char_traits<char>
    ]
    What does this mean?

    Code:
    
    #include <iostream>
    #include <fstream>
    using namespace std;
    #include <conio.h>
    #include <string>
    
    int main()
    {
         //Step01: Declare Memory Location
              ifstream InFile;
              ofstream OutFile;
              string MyWord;
         //Step02: Initialize Memory Location
              InFile.open("C:/Temp/TestData1.txt");
              OutFile.open("C:/Temp/TestData1.txt");
         //Step03: Do the Work
    	if (!InFile.open())  //Boolean value (True/False)
    	{
    	     cout << "File does not exist" << endl;
    	     getch();
    	     exit (0);
                    }
    	InFile >> MyWord;
    	cout << MyWord << endl;
    	OutFile << MyWord;
    	InFile >> MyWord;
    	cout << MyWord << endl;
    	OutFile << MyWord;
         //Step04: Wrap up and Exit
              cout << endl;
              getch();
              return 0;
    }
    Any hints?

  2. #2
    and the hat of wrongness Salem's Avatar
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    > if (!InFile.open()) //Boolean value (True/False)
    No parameters here (there should be)
    I rather suspect you want to be testing something else if you're trying to detect whether the file was opened or not.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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  3. #3
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    > if (!InFile.open()) //Boolean value (True/False)
    Try:
    if (!InFile.is_open()) //Boolean value (True/False)

  4. #4
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    ...or just:

    if(!inFile)

    I rather suspect you want to be testing something else if you're trying to detect whether the file was opened or not.
    I don't understand that comment. It seems to be standard procedure to check if everything is OK when you open a file for reading.
    Last edited by 7stud; 03-15-2005 at 01:46 PM.

  5. #5
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    >I don't understand that comment.
    What he means is the function inFile.open() doesn't check for an open file. All open() does is open a file.

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