get function for files

[dcftci]

hi,
I'm trying to read an integer value from file and I was wondering if I could use get function I wrote a simple code to understand how get function works but unfortunately I couldn't figure it out.so I need your help. Here is my simple code

fstream file;
	string filename;
	filename= "C:\\Users\\dell\\Documents\\Visual Studio 2010\\Projects\\first sağlama\\TextFile1.txt";
	file.open(filename,ios::in|ios::out);
	file.seekg(0,ios::beg);
	cout<<file.get();
	system("pause");

the output on the screen is 49. but what I wrote to textfile was 1234

[Chervil]

49 is the ASCII code for character '1'.
Your code above reads just a single character.
Normally you'd do something like this:

    int num;
    file >> num;
    cout << num;

[Chervil]

Or you could read each character and construct the integer a digit at a time:

        char c;
        int a = 0;
        while (file.get(c))
        {
            if (c >= '0' && c <= '9')
            {
                a *= 10;
                a += c - '0';
            }
            else
                break;
        }
        cout << a << endl;

[dcftci]

But if I have more than 1 integer in the file how will the program understand where an integer starts and where it ends. I tried to put a certain cahracter like 'a' between each integer so when file.get() returns 97 program understands that a new integer starts but is there any other way? because the program should be able to retrieve the integer in the middle of the file

[Chervil]

The example code I posted previously tests the character like this if (c >= '0' && c <= '9') at line 5.

As you can see, this loop will end when the character is not a digit. Commonly you would use a space or newline character to mark the end of the number. Though my code would also work with the letter 'a' because that is not a digit.

[dcftci]

how was it the cahracter at line 5? I mean it is not indicated at the code you posted right ?

[Chervil]

Sorry, I just meant that was the program line number where that code was to be found. I guess rather than helping, it was a distraction.

[dcftci]

Oh ok I got it now:) thanks for the help bcoz although I used it in one of my earlier codes I just couldn't figure how to convert number of characters into integer I guess its bcoz I'm new and I have to practice a lot
anyways thanks again