/prog/ challenge: Write a text editor

The best quality editor you can fit a post, not using external libraries. Only include default headers/imports/libraries.
Programs will be judged by their array of features, stability of operation and memory use.

#include <iostream>

using namespace std;

int main(int argc, char[] argv) {
    char* buf = new char[10000];
    while ((2+2) == 4) {
        char << cin;
        cout >> '\n?';
    }
}