Re: Using fstream

Adam,

In C++, you don't have to put your variables at the start of code blocks. In fact, you shouldn't, because objects may perform initialization when you declare them. That is what is happening in your case. In C++, variable scope is much more significant than in C. Lookup constructors and destructors.

If you move the line "ifstream fin("input.txt");" just before the line " fin.getline(arr_words, 49); //using getline to get whole words" it should work slightly better. You still have problems, but I'll leave those as an exercise for the programmer.

John

On Feb 7, 2007, at 7:30 PM, Adam wrote:

Hello all,

I created a short program using <fstream>, and in it I created a file that I wanted to put information in, and later extract the information. (see code below) The problem is that it doesn't work - I'll input the data a second later and it doesn't display any information that it stored. Is this a code bug, or something in the way I compiled it?

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code

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#include <iostream>

#include <fstream>

using namespace std;

char arr_words[50];

int fifty_one;

ifstream fin("input.txt");

ofstream fout("input.txt");

int main()

{

fout << "Dude, am I coming in loud and clear?" << 51 << flush; //saves file inside project

fout.close(); //close teh file!

fin.getline(arr_words, 49); //using getline to get whole words

fin >> fifty_one;

cout << fifty_one << endl << arr_words;

fout << arr_words << fifty_one << flush;

return 0;

}

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All help is appreciated and thanks in advance.

~ < [ / Adam-o \ ] > ~

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Please keep your posts straight and 

to the point. Also please comment 

the code you use as I am still learning 

OpenGL and Xcode and may not yet 

understand the meaning of the command.

 Thank you.

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