Data-Structures-implement-a-program-that-simulates-a-simple-text-editor-with-the-undo-redo-function

In this project you will implement a program that simulates a simple text editor with the undo/redo functionalities allowed. The program will accept statements, one at a time with a maximum of 100 characters per line. There will be some special commands as follows:

1. undo: this will undo (i.e., remove) that last entered statement;
2. redo: this will redo (i.e., re-add) that last removed statement;
3. print: this command will print the entire stored input text;
4. save: will save the text to a file called (output.txt);
5. quit: will exit the program and save all results to output.txt