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Name: Write a function-based C++ program that reads a c-string from a file (
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Description: Write a function-based C++ program that reads a c-string from a file (input.txt) and an integer key from the console. Your program should encrypt the string by adding the key value to all its alphabets. Make sure that if adding the key value makes th

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Write a function-based C++ program that reads a c-string from a file (input.txt) and an integer key from the console. Your program should encrypt the string by adding the key value to all its alphabets. Make sure that if adding the key value makes the alphabet go past the letter ‘Z’ or ‘z’, you must rollover and start over from ‘A’ or ‘a’ respectively. All other non-alphabetic characters should remain the same. Write the encrypted string into an output file (output.txt). Example 1: Input File Aliens on Earth! Enter a key: 1 Output File Bmjfot po Fbsui! Example 2: Input File Welcome to Xiwan restaurant XYZ. Enter a key: 5 Output File Bjqhtrj yt Cnbfsl wjxyfzwfsy CDE.

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