Writing An Array Of Numbers To A Text File

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March 16th, 2004, 11:40 AM

Iceman90

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Writing An Array Of Numbers To A Text File

Hello all.

I am writing a program and need some help.

I have an array of numbers, ( int numbs[MAX] ) with MAX being a pre-determined maximum value.

How would I go about writing this array worth of numbers to a file? I can write from file to array, but can't seem to make it work going backwards.

If anyone can post some code to help me out, it would be appreciated.

thanks.

P.S.
Here is my code so far. Some of the code is commented out because I was trying different things. This is sloppy, but gives an idea of what I need and where I am at.

Code:

void write_final_file()
{

	system ("cls");

	int numbs[MAX];  // the array of numbers
	
    ofstream file_ptr ("sorted.txt", ios::out | ios::trunc); //creates the file to be written to.
    
    
	//Error Trapping
	if (!file_ptr) //If The File Can't Be Opened
	{
		cout<<"**This File Has Been Abducted By Aliens!**"<<endl;
		cout<<"**Error Opening File**"<<endl; //Error Message
		cout<<"**Program Will Be Terminated**"<<endl;
		system ( "PAUSE" );
		exit(1); //Terminates the program
	} 
	//End Of Error Trapping
	
	//for (int x=0; x<MAX; x++)
    //{
      // NEED THIS CODE!!
//writes the numbers from the array to the file
   //}
    
    file_ptr.close(); //closes the file
    
    cout<<"Your Numbers Have Been Written To The File Sorted.txt"<<endl;
    cout<<"Press Any Key To Return To The Main Menu"<<endl;
    _getch();
}

Last edited by Iceman90 : March 16th, 2004 at 11:45 AM. Reason: Fixed The Code

March 16th, 2004, 11:55 AM

mitakeet

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Not tested:

Code:

    for (int x=0; x<MAX; x++){
        file_ptr << numb[x] << endl;
    }

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March 16th, 2004, 03:37 PM

Iceman90

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Anyone else?

March 16th, 2004, 03:45 PM

mitakeet

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So did you try mine and it didn't work? Just because I didn't compile and run it doesn't mean I don't know what I am talking about!

March 16th, 2004, 04:03 PM

DaWei_M

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We didn't realize it was a poll.
Not tested. Thanks to Mitakeet for all but four characters.

Code:

    for (int x=0; x<MAX; x++){
        file_ptr << *(&numb[x]) << endl;
    }

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