Question

• Add an item to a Text File / C++

• the program will prompt for a filename AND then prompt for a text file item. text file items always contain an unknown amount of spaces, (see getline).

• Allow the user to put both the filename and the extensions, like groceries.txt or retirementToDo.clist

• Don't add any directory information to the filenames, use them as typed.

• If the file does exist, the item will be APPENDED to the end of the file.

• If that file does not exist, it will be created. (This will happen anyway with append)

The user may put in a checklist item with any number of spaces. (use getline(), not >>)

Answer 1

Attached the code. It has comments for explanation, you should go through them. If you get any queries, feel free to talk about it.

Program Screenshot for Indentation Reference:

Sample Output:

./fileitem
Enter filename: checklist.txt
Enter item to add: Finish web project by tomorrow
./fileitem
Enter filename: checklist.txt
Enter item to add: Get membership for gym
cat checklist.txt
Finish web project by tomorrow
Get membership for gym

Program code to copy:

#include <iostream>
#include <fstream>

using namespace std;

int main() {
    // ask for filename
    string filename;

    cout << "Enter filename: ";
    cin >> filename;

    // open file stream is append mode
    fstream file(filename, ios::in | ios::out | ios::app); // ios::app is for append
    // check file opened or created
    if (!file) {
        cout << "Unable to access file" << endl;
        return -1;
    }
    // get item to add
    string item;
    cout << "Enter item to add: ";
    // ignore newlines in input buffer
    cin.ignore(1, '\n');
    getline(cin, item); // use getline
    // add to the file
    file << item << endl;
    // close file
    file.close();
    return 0;
}