Thread: File IO / help please

hi,
I am making a little program that encodes text files, but I have a small problem.

The text file has this text: test line
My program output text: testlline
(there is no encodeing going on yet)

It replaces the spaces with the char infront of it.

here is my code:

while(!cfile.eof())
{
// Read Char //
cfile.seekg(file_pos);
cfile >> char_buffer;

// Encode Char //
int_buffer = int(char_buffer);
//int_buffer+=-1;

// Write Char
cfile.seekp(file_pos);
char_out = char(int_buffer);

cfile << char_out;

file_pos++;
}

I am trying to leave the spaces as spaces, or even better, encode them too. Is my program skipping the spaces because of the code: cfile >> char_buffer; ?? if so, what way can I input text from a file?

thanks alot!

you might want to use the function member function 'get(char *, int)', (or since you seem to be inputting a single character at a time, 'get(char &ch)') to read in data.

Code:

while(!cfile.eof())
{
// Read Char // 
cfile.seekg(file_pos); 
cfile.get(char_buffer); 

// Encode Char // 
int_buffer = int(char_buffer);  //casting isnt necessary here, char_buffer += -1, or simply char_buffer-- will suffice
//int_buffer+=-1; 

// Write Char 
cfile.seekp(file_pos); 
char_out = char(int_buffer); 

cfile << char_buffer;

file_pos++; 
}

might I suggest you read in a few more char's than just one at a time, like say 1000 (or more, depending on file size), and encoding the whole buffer, it will go much quicker