//#include <iostream.h> included with fstream.h
#include <fstream>
//this takes a file and encrypts/decrypts it with the given password
int main()
{
ifstream ifile;
ofstream ofile;
char character;
char password[64];
char inputfile[100];
char outputfile[100];
int counter = 0;
bool state;//encrypt = 0 decrypt=1
cout << "enter the password\n";
cin >> password;
cout << "\nenter the file you want to read from\n";
cin >> inputfile;
cout << "\nenter the file you want to write to\n";
cin >> outputfile;
cout << "\ndo you want to\nencrypt: 0\ndecrypt: 1\n";
cin >> state;
ifile.open(inputfile);
ofile.open(outputfile);
while(!ifile.eof())
{
if(password[counter] == '\0')
{
counter = 0;
}
ifile >> character;
cout << character << " ";
if(!state)
{
character = character+password[counter];
}
else
{
character = character-password[counter];
}
cout << character << "\n";
ofile << character;
counter++;
}
//EDIT: forgot to close my files
ofile.close();
ifile.close();
//END EDIT
cin >> password; //wait before stopping program
return 0;
}
the program works fine but it doesn't seem to detect spaces or newlines. also it adds an extra byte at the end of the file.
KTHXBYE
[edited by - googlyeyes on August 18, 2003 3:02:45 PM]
File I/O help: space and newline
here is my program
EDIT: Scrap what I said. You can use
Incidentally, as you are using C++, you really should be using
Bear in mind that, as it is at the moment, it is extremely easy to work out your encryption/decryption algorithm, i.e. decipher (decode).
[ Google || Start Here || ACCU || STL || Boost || MSDN || GotW || MSVC++ Library Fixes || BarrysWorld || E-Mail Me ]
[edited by - Lektrix on August 18, 2003 4:12:44 PM]
std::istream::get()
, i.e. in your case ifile.get()
. If you want to know why, std::istream
's overloaded right-shift operator (>>
) skips over whitespaces, whilst std::istream
's get()
method does not.Incidentally, as you are using C++, you really should be using
std::string
. I would strongly recommend using the STL.Bear in mind that, as it is at the moment, it is extremely easy to work out your encryption/decryption algorithm, i.e. decipher (decode).
[ Google || Start Here || ACCU || STL || Boost || MSDN || GotW || MSVC++ Library Fixes || BarrysWorld || E-Mail Me ]
[edited by - Lektrix on August 18, 2003 4:12:44 PM]
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