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File Streams

 
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File Streams
TwoSpots
15 Mar, 2007 - 03:23 PM
Post #1

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Hello all,

I am having difficulties with a problem and would appreciate any help.

The question that I am working on asks to store the results in a text file specified by the user. I have no problems outputting the results to a predefined text file (“example.txt”) however; I am not able to print the results to a text file of the user’s choice ("User_choice.txt").

i.e.
string file_name;
cout << "Please enter the filename and extension, that would you like to store your results in (i.e. test.txt): ";
getline (cin,file_name);
cout << "Thank you, your results are stored in " << file_name << "." << endl;

ofstream outfile;
outfile.open ("User_choice.txt"); // and not(“file_name”)

How do I create and open a file specified by the user so that I can store data in this file?

Thanks

TwoSpots.
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Jayman
RE: File Streams
15 Mar, 2007 - 03:52 PM
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You can use the variable that you created, but do not use quotes around it.
CODE

outfile.open (file_name); // and not(“file_name”)
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TwoSpots
RE: File Streams
15 Mar, 2007 - 06:30 PM
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QUOTE(jayman9 @ 15 Mar, 2007 - 04:52 PM) *

You can use the variable that you created, but do not use quotes around it.
CODE

outfile.open (file_name); // and not(“file_name”)



Hello Jayman,

Thanks for the immediate response. I tried removing the quotes however, I get the following error: no matching function for call to ‘std::basic_ofstream<char, std::char_traits<char>>::open(std::string&)’.

I also tried outfile.open(file_name,ios::out); but no luck. For the record I did included: #include <fstream>.

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Jayman
RE: File Streams
15 Mar, 2007 - 06:44 PM
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Oops, sorry.

You need to convert the string to a c-string.
CODE

outfile.open (file_name.c_str( ));
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TwoSpots
RE: File Streams
15 Mar, 2007 - 06:49 PM
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It worked! Thanks a lot Jayman~

QUOTE(jayman9 @ 15 Mar, 2007 - 07:44 PM) *

Oops, sorry.

You need to convert the string to a c-string.
CODE

outfile.open (file_name.c_str( ));
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