user data security
Nov 14, 2015 at 3:49pm UTC
@Thomas, sorry your given code is not working i mean, content of the text file is not displayed
It worked on my computer and displayed the file correctly.
Are you sure that the filename is correct and the file contains text?
Could you post some content of the file?
Nov 14, 2015 at 3:55pm UTC
@MikeyBoy, even if I'm putting the input in line, content is not being displayed
Without seeing the code you're actually talking about, we can't possibly know what's wrong.
You're really not making this easy for us to help you.
Nov 15, 2015 at 2:06am UTC
1char line[1000];
cout<<"\t\tEnter File name: " ;
cin>>fname;
ifstream myfile(fname);
while (!myfile.eof())
{
myfile >> line;
cout << line << '\n' ;
myfile.close();
}
yes Thomas, the file I'm trying to open is test which contains the following code as content
test.cpp
1#include <iostream.h>
#include <stdlib.h>
#include <string.h>
void main()
{
char user[]="mini" ;
char pass[]="qwert" ;
char username[10], password[10];
int i;
cout << "username" ;
cin >> username;
cout << "password" ;
cin >> password;
if (strcmp(username,user) && strcmp(password,pass))
{
cout << "correct login. enter i" ;
cin >> i;
}
else
{
cout << "kuwcyvku" ;
cin >> i;
}
}
the program is not showing any error but this content is not getting displayed, tough it is working well in Dev C++ as i told but i have to implement it in Turbo C++
Nov 15, 2015 at 2:07am UTC
and string is not considered as any data type in Turbo C++, so I replaced string with char array,
Nov 15, 2015 at 9:50am UTC
and string is not considered as any data type in Turbo C++, so I replaced string with char array,
did you include <string> ?
It would be very odd if you could use cout, cin and istream but not string.
Anyway it should work with chars as well.
Try this code. Maybe it will show at least some info.
1ifstream myfile(fname);
if (!myfile)
{
cerr << "Error opening file: " << fname << endl;
return ;
}
myfile.seekg(0, ios_base::end);
streamoff filelen = myfile.tellg();
myfile.seekg(0, ios_base::beg);
cout << "Length of " << fname << " = " << filelen << endl;
while (!myfile.eof())
{
myfile.getline(line, sizeof (line));
cout << line << endl;
}
myfile.close();
Nov 17, 2015 at 9:29am UTC
not showing anything
Nov 17, 2015 at 12:18pm UTC
If the code is reached there must be an output, either the error message or the message with the file len.
Nov 19, 2015 at 8:53am UTC
1#include <iostream.h>
#include <stdio.h>
#include <string.h>
#include <conio.h>
#include <fstream.h>
void lockfolder();
int main()
{
int i,a=0,count=0;
char c,fname[10];
char user[12] = "miniproject" ;
char pass[11] = "qwert!@#$%" ;
unsigned int choice=0, lock, yes;
cout << "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n" ;
char username[11], password[10];
cout << "\n\t\t\tWelcome to our Security System..!!!" << endl;
while (count<3)
{
cout << "\n\t\tUsername :: " ;
cin >> username;
cout << "\n\t\tPassword :: " ;
cin >> password;
if (strlen(username) < 11)
{
cout << "\n\t\tincorrect id password" ;
count++;
}
if (strlen(password) < 10)
{
cout << "\n\t\tincorrect id password" ;
count++;
}
if (strcmp(username, user)==0 && strcmp(password, pass)==0)
{
cout << "\n\n\t\t\t\t Login Successful" << endl;
cout << "\t\t\t\t-------------------\n\n" << endl;
cout << "\n\n\t\t\t --=Welcome to the software=--" << endl;
cout << "\t\t\t=================================\n\n\n" << endl;
count=3;
do
{
switch (a)
{
case 0:
{
cout << "\t\tAvailable commands:\n" ;
cout << "\t\t-------------------\n\n" ;
cout << "\t\t0. list commands\n" ;
cout << "\t\t1. write a new file\n" ;
cout << "\t\t2. load a file\n" ;
cout << "\t\t3. exit program\n" ;
break ;
}
case 1:
{
ofstream out;
cout<<"\t\tEnter File name:" ;
cin>>fname;
out.open(fname);
cout<<"\t\tEnter contents to store in file (Enter # at end):\n" ;
while ((c=getchar())!='#' )
{
out<<c;
}
cout<<"Is it a confidential file? \n Want to encrypt the content for security? \n press 1 else press 2 :: " ;
cin>>choice;
if (choice==1)
{
encrypt();
}
else
{
cout<<"quitting..." ;
}
out.close();
break ;
}
case 2:
{
/*cout<<"enter file name to open ";
cin>>fname;
if(lock==1)
{
cout<<"sorry..this file is locked.\n Want to unlock? press 1 ";
cin>>yes;
if(yes==1)
{
cout<<"enter unlock code ";
cin>>code;
if(code==mycode[12])
{
lock=0;
}
else
cout<<"wrong code";
return 0;
}
else
return 0;
} */
char line[1000];
cout<<"\t\tEnter File name: " ;
cin>>fname;
fflush(stdin);
ifstream myfile;
myfile.open("fname" ,ios::in);
while (myfile.eof()==0)
{
myfile.getline(line,100);
cout<<line;
}
break ;
}
case 3:
{
cout<< "\n\n\t\tTHANK YOU FOR USING THIS SOFTWARE..." ;
break ;
}
default :
cout << "\n\n\t\tUnrecognized command. Enter '0' to view command list\n" ;
}
cout << "\n\t\tEnter command:" ;
cin >> a;
}
while (a!=3);
}
else
{
cout << "\n\t\tInvalid login details. Please try again"
<< endl;
count++;
}
}
return 0;
}
here it is
Nov 19, 2015 at 8:56am UTC
the code for load file i have used here is not working tough the same code is working in my encrypt file program, however in place of fname
Nov 21, 2015 at 9:49pm UTC
it's done..!!!
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