Reading bmp file for encrypting and decrypting txt file into it

Posted by Shantanu Gupta on Stack Overflow See other posts from Stack Overflow or by Shantanu Gupta
Published on 2010-03-21T20:14:06Z Indexed on 2010/03/21 20:21 UTC
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I am trying to read a bmp file in C++(Turbo). But i m not able to print binary stream.

I want to encode txt file into it and decrypt it. How can i do this. I read that bmp file header is of 54 byte. But how and where should i append txt file in bmp file. ?

I know only Turbo C++, so it would be helpfull for me if u provide solution or suggestion related to topic for the same.

int main()
{
ifstream fr; //reads
ofstream fw; // wrrites to file
char c;
int random;
clrscr();
char file[2][100]={"s.bmp","s.txt"};

fr.open(file[0],ios::binary);//file name, mode of open, here input mode i.e. read only
if(!fr)
    cout<<"File can not be opened.";
fw.open(file[1],ios::app);//file will be appended
if(!fw)
    cout<<"File can not be opened";
while(!fr)
    cout<<fr.get(); // error should be here. but not able to find out what error is it

fr.close();
fw.close();
getch();
}

This code is running fine when i pass txt file in binary mode

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