Text Editor

Overview

This console-based C++ application simulates the core editing functionalities used in a press agency. It allows inserting and deleting text and supports undo and redo operations using a custom stack data structure.

The core idea is to digitize the editing process, making text changes reversible.

Features

• INSERT <index> <text>: Insert a string at the given position.
• DELETE <index> <length>: Delete a substring starting from index with the specified length.
• UNDO: Undo the last performed operation (INSERT or DELETE).
• REDO: Reapply the last undone operation.
• EXIT: Exit the program.

The undo and redo functionalities are implemented using two stacks that store operations performed.

Each operation is stored in a structure that includes:

• Operation type: INSERT or DELETE
• Position: the index in the text
• Text: the text inserted or deleted

Example Workflow

INSERT 0 Article
# Text becomes: "Article"
DELETE 1 2
# Deletes "rt", text becomes: "Aicle"
UNDO
# Reverts delete, text becomes: "Article"
REDO
# Reapplies delete, text becomes: "Aicle"

Input Validation

• Handles incorrect inputs (e.g., negative indices, index out of bounds).
• Notifies user when UNDO or REDO cannot be performed.

Notes

• Indexes are 0-based.
• Each valid operation updates the text and prints the result to the console.