read from input file

I am confuse understanding the statement " the program must be able to read from input file and write into output file"....can anyone help me to clarify this? Thanks

If you were using the keyboard and screen

Code:

cin >> var;
// some stuff
cout << var;

To use files, you would do

Code:

ifstream fin("input.txt");
ofstream fout("output.csv");
fin >> var;
// some stuff
fout << var;

any examples program i can try?

Originally Posted by imjustnew

any examples program i can try?

I'd say all Salem's second example is missing is a main() and some data. Try it. Consult documentation for fstream as appropriate. If what you come up with doesn't work the way you expect, post it here.

hi

Is "ifstream" used for reading a file and "ofstream" for writing to the file?

what is "fin"?

See this link: C++ file io.

Jim