1. C++ FileIO
pepper

2. fstream
fstream From

3. Using fstream Include <fstream> Declare variable of type fstream
Open file – ask your fstream variable to open the file
Your ofstream var .open(“filename”,qualifiers)
qualifiers
In: ios::in
Out: ios::out
Append: ios::append
Binary: ios::binary
Ex:
ofstream myfile;
myfile.open ("example.bin", ios::out | ios::app | ios::binary);

4. Test status of stream Ex: If (myfile.is_open()) {
myfile.is_open() : returns true if open
myfile.eof() : returns true if file at end and open for reading
myfile.bad() : return true if any read or write fails
myfile.good() : opposide of bad
Ex:
If (myfile.is_open()) {
myfile << “ I can write just like cout “;}
If (!myfile.eof()) { // read more };

5. Stream positions directions: ios::beg (beginning of file)
Read (Get)
Write (Put)
Where?
tellg
tellp
Set position
seekg (position)
seekp (position)
Set relative position
seekg (offset, direction)
seekp (offset,direction)
directions:
ios::beg (beginning of file)
ios::cur (current position)
ios::end (end of file)

6. Binary file methods binary read and write helper:
read (buf, size);
write(buf, size);
Just makes it easier to use a record layout (structure)

7. Close when done
Ask your stream to close itself:
myfile.close();