problem on program (C++ Learning Community)

Title: problem on program

homeslice - January 29, 2007 12:50 AM (GMT)

My program compiles, but it doesnt get past the "overwrite?" query:

CODE

#include <iostream>
#include <fstream>
#include <cstdlib>

using namespace std;
int main()
{
int num;
char filename[16], cont, again;
ifstream instream;
ofstream outstream;

cout << "This program allows the user to open a file and write "
<< "some positive integers on it, ending at -1. The program "
<< "will then echo back the input.";

do
{
do
{
cout << "Please enter in the name of a file\n";
cin >> filename;

outstream.open(filename);

if (outstream.fail() )
{
cout << "The file failed to open\n";
system ("pause");
exit (1);
}

cout << filename << " opened succesfully, overwrite? "
<< "(enter \"Y\" if yes.\n";
cin >> cont;

}while (cont != 'Y' || cont != 'y');

cout << "Enter a bunch of positive integers and when you "
<< "are done, enter a -1\n\n";

num = 1;

while (num != -1)
{
cout << "Enter a number\n";
cin >> num;

if (num >= 0)
{
outstream << num << " ";
}
else if(num != -1)
{
cout << num << "must be greater or equal "
<< "to 0 ";
}
}

outstream << num;

outstream.close();

instream.open(filename);

cout << "I will now read the file you have modified :\n\n";

instream >> filename;

instream.close();

cout << "Would you like to run this program again? enter "
<< "\"y\" if yes.";
char again;

}while (again == 'y' || again == 'Y');

return 0;

charlie - January 29, 2007 08:31 PM (GMT)

You are missing the cin >> again again. Does that fix it?

If not, can you give sample input and its output. I don't know what you mean by "it doesnt get past the "overwrite?" query".

Shonoby - January 29, 2007 08:44 PM (GMT)

Well, he also forgot to put the ending brackets on main (' } '). Also i think what he mean was. After you input the file, and u try to overwrite it, it always says that it could not open the file. How are u trying to overwrite the code?

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