Read and Write to TEXT file.

[sithmal]

Im new to c++ and i want to know how to get line by line from the text file and store in to struct. Plz help me.Thanks

[Banfa]

That rather depends on what data is stored in the text file.

Look up the following functions for reading and writing a text file

fopen
fclose
fgets
fputs
fprintf

Once you have a line of text you will need to verify it's format and parse it into your structure.

[Ganon11]

If you want to use ifstreams and ofstreams instead of fscanf, etc:

1) Make sure you #include <fstream>
2) A file input stream variable is type ifstream, so you can declare an ifstream variable by saying:

ifstream IN;

3) Open the proper file by using the .open() command:

IN.open("C:\\My Documents\\My Data Files\\example.txt");

The file name needs to be enslosed in a string like this. Alternatively, if you wanted to open files dynamically (a.k.a. ask the user for a file to open), the variable inside needs to be a cstring.

4) Treat your ifstream variable (IN) like cin - using >>, getline, .ignore(), etc. as you would with the standard istream variable (cin).

5) When you are finished, make sure to close the ifstream variable:

IN.close();

To write to a file, use an ofstream variable, repeating steps 1 through 3, replacing ifstream with ofstream:

ofstream OUT;
OUT.open("C:\\My Documents\\My Output Files\\example.txt");
OUT >> "Blah blah blah.  text here." >> endl;
OUT.close();

Treat ofstream variables as you would cout.