Problem in file handling!

[SUNIL TYATA]

Once the program goes through the while loop which is checking the file existence like in this code

#include<iostream>
#include<fstream>
using name space std;
int main()
{
read_emails();
return 0;
}
 
void read_emails()
{
fstream infile;
 
char path[100];
cout<<"Format of the path is like this: c:/tc/test.txt";
cout<<"Give the path of the file (*.txt or *.dat) to test: ";
cin>>path;
infile.open(path, ios::in);
 
while(!infile)
{
cout<<"Error! can not open the file.";
//again I prompt the user to give the path of the file 
cout<<"Format of the path is like this: c:/tc/test.txt";
cout<<"Give the path of the file (*.txt or *.dat) to test: ";
cin>>path;
infile.open(path, ios::in);
}
 
}
 

then it continue arises the error even if we give the correct path.
I have no idea what should be the best solution for this.

My out put trial was

Format of file path-> c:/file.txt

Give the path for the file(txt or dat):c:/tc/email.txt //correct user input


Done!

------------------
LIST OF E-MAILS:
------------------
<[e-mail]>
[e-mail]
[e-mail]
[e-mail]
[e-mail]
[e-mail]
[e-mail]
[e-mail]
[e-mail]

Wrote down on the addresses.dat is completed.

Do you want to continue?('Y' for YES of 'N' for NO): y

Format of file path-> c:/file.txt

Give the path for the file(txt or dat):c:/ //User gave the incorrect input for checking
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):c:/tc/email.txt //but this time user gave the corrct file path as user already gave before but It gives Error msg (why?)
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):




y
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):y
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):y
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):y
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):y
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):y
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):c:/tc/email.txt
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):c:/c++/array1.txt
Error! opening file.

choose the correct path
Format of file path-> c:/file.txt
Give the path for the file(txt or dat):

[weaknessforcats]

I expect when you enter the path the first time incorrectly, the string is followed by the enter key which is still in the input buffer. The next cin hits it and returns a null path even though the correct path follows. I suggest a cin.ignore() to eat that enter key.

[SUNIL TYATA]

I did use cin.ignore() with in while body but same problem no change...

[newb16]

I have a doubt about forward slashes.

[drhowarddrfine]

@newb16 is right. The slashes are the wrong way for Windows.

[SUNIL TYATA]

If you are talking about the forward slash for the path of the file as long as I know and it works with out any problem.

c:/tc/email.txt
file path is working


But once If i give the file path like
c=/tc/m.txt //in this file path there is something wrong in place of colon it was '=' sign.

this is going to be incorrect and while loop certainly give error message to the user with another prompt by asking to give the correct file path.

Even I give the correct file path this time it does not work.

It suppose to give me correct out put rather than Error message.

Please! need a help.

[newb16]

@SUNIL TYATA
You need to call ios::clear for the input stream after failed open() attempt (...On failure, the failbit flag is set ...)