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POC++ copy text file program using header file
 

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  1. POC++ copy text file program using header file
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    <p>Hello i am making a program that is supposed to copy a text file. The text file is just 3 lines of text at the moment. The textFileCopy function is supposed to read in a text file given by the filenamein array and then output a copy of the text file given by the filenameout array.</p> <p>This is my main.cpp file. In this file the program requires the user to send an input filename and an output filename as arguments which i have just done using the command argument box in visual studio, the command argument box contains "input.txt output.txt" so this means that argv[1] contains the input file and argv[2] contains the output file which is to be created</p> <pre><code>#include &lt;iostream&gt; #include &lt;fstream&gt; #include &lt;string&gt; using namespace std; #include "FileUtilities.h" int main(int argc, char **argv) { FileUtilities fileUtil; fileUtil.textFileCopy(false, false); if (argc !=3) { cerr &lt;&lt; "Usage: " &lt;&lt; argv[0] &lt;&lt; " &lt;input filename&gt; &lt;output filename&gt;" &lt;&lt; endl; int keypress; cin &gt;&gt; keypress; return -1; } fileUtil.textFileCopy(argv[1], argv[2]); int keypress; cin &gt;&gt; keypress; } </code></pre> <p>And this is the FileUtilities.h file which declares the textFileCopy function</p> <pre><code>#include &lt;iostream&gt; #include &lt;fstream&gt; #include &lt;string&gt; using namespace std; #pragma once class FileUtilities { public: bool textFileCopy(char filenamein[], char filenameout[]); }; </code></pre> <p>And here is the matching FileUtilities.cpp file including textFileCopy function</p> <pre><code>#include &lt;iostream&gt; #include &lt;fstream&gt; #include &lt;string&gt; #include "FileUtilities.h" bool FileUtilities::textFileCopy(char filenamein[], char filenameout[]) { ifstream fin(filenamein); if(fin.is_open()) { ofstream fout(filenameout); char c; while(fin.good()) { fin.get(c); fout &lt;&lt; c; } fout.close(); fin.close(); return true; } return false; } </code></pre> <p>I am having trouble creating the function defined in the .h file in the .cpp file and i get errors with this line <code>FileUtilities::textFileCopy(char filenamein[], char filenameout[])</code> from the .cpp file. I know the actual code in the function works its just that first line</p> <p>UPDATE</p> <p>Ok so i have put bool before the function.</p> <p>Now the program compiles and i get an error in a dialog box as follows</p> <p>"Microsoft Visual C++ Debug Library</p> <p>Debug Assertion Failed!</p> <p>Program: .....Parser.exe file f:\dd\vctools\crt_bld\Self_x86\crt\src\fopen.c Line 53</p> <p>Expression: (file!=NULL)"</p> <p>then it opens a file "dbghook.c" in visual studio</p>
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    1. USMarc
    1. USMarc
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    1. COYou could post the error you're getting and it would be easier to diagnose your problem. One obvious problem is that you're missing the `bool` return type.
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      1. POC++ copy text file program using header file
      1. USPablo
    2. CO**Please** don't put `using namespace` in a header, it makes your code less reusable.
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      1. POC++ copy text file program using header file
      1. USFred Foo
    3. COYou have another question. Put it in another post.
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      1. POC++ copy text file program using header file
      1. USBenjamin Lindley
 

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