normalization to files. hints needed

[simrawr]

I am stuck at this normalization part. I am using a string and reading data one by one. I keep getting blank. The program compiles. Any hints to what to do next would be awesome. How would I complete the 5 steps below? Steps 3 and 4 work fine.

A program that reads a text file using character-by-character I/O and performs the following normalization tasks:

1. Replaces all tab characters with 8 spaces
2. Replaces all upper-case letters with lower-case letters
3. All @ symbols will be replaced by the word "at".
4. All = signs will be replaced by a series of 19 = signs.
5. When you find an asterisk, you will print a series of asterisks. The character following the asterisk indicates the number of asterisks to print. Use the ASCII value of the character following. Number of asterisks is ASCII value minus 32 plus 1. The character following the asterisk is used only as a counter, not a data character.

#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
using namespace std;

int main() {
    ifstream fin;
    ofstream fout;
    char fname[256];
    char ofname[256];
    char norm[256] = ".normal";
    int count = 0;
    //Opening input and output file
    cout << "What file do you want to be normalized? \n";
    cin >> fname;
    cout << "\n";
    fin.open(fname);
    if (fin.fail()) {
        cout << "Error opening input file! \n";
        return 0;
    }
    strcpy( ofname, fname);
    strcat( ofname, norm);
    fout.open(ofname);
    if (fout.fail()) {
        cout << "Error opening output file! \n";
        return 0;
    }
    cout << "Your output file name is: " << ofname << "\n";
    //Normalization begins here
    char data;
    while (fin.get(data)) {
        if (data == '\t') { //***
            fout << "        ";
        }// else if (isupper(data)) { //***
               // fout << tolower(data);  //***

        else if (data == '@') {
            fout << "at";
        } else if (data == '=') {
            fout << "===================";
        } else if (data == '*') {
            fout << "some shit";
        }
    }
    fin.close();
    fout.close();
    return 0;
}