Answered: USE PYTHON Source:…

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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Question

USE PYTHON

Source: en.wikipedia.org/wiki/Camel_case

In some languages, it’s common to use camel caseLinks to an external site. (otherwise known as “mixed case”) for variables’ names when those names comprise multiple words, whereby the first letter of the first word is lowercase but the first letter of each subsequent word is uppercase. For instance, whereas a variable for a user’s name might be called name, a variable for a user’s first name might be called firstName, and a variable for a user’s preferred first name (e.g., nickname) might be called preferredFirstName.

Python, by contrast, recommendsLinks to an external site. snake caseLinks to an external site., whereby words are instead separated by underscores (_), with all letters in lowercase. For instance, those same variables would be called name, first_name, and preferred_first_name, respectively, in Python.

In a file called camel.py, implement a program that prompts the user for the name of a variable in camel case and outputs the corresponding name in snake case. Assume that the user’s input will indeed be in camel case.

****Please see attached image for TEST and DEMO.Thanks****

## How to Test

Here's how to test your code manually:

- **Step 1**: Run your program with `python camel.py`. Type `name` and press Enter. Your program should output:
```
name
```

- **Step 2**: Run your program with `python camel.py`. Type `firstName` and press Enter. Your program should output:
```
first_name
```

- **Step 3**: Run your program with `python camel.py`. Type `preferredFirstName` and press Enter. Your program should output:
```
preferred_first_name
```

You can execute the below command to check your code using `check50`, a program that CS50 will use to test your code when you submit. But be sure to test it yourself as well!

```
check50 clark-college-ctec/ctec-121-problems/2022/fall/camel
```

### Demo Explanation

In the demo on the right, the following commands and outputs are shown:

```
$ python camel.py
camelCase: name
snake_case: name

$ python camel.py
camelCase: firstName
snake_case: first_name

$ python camel.py
camelCase: preferredFirstName
snake_case: preferred_first_name
```

This demonstrates how the input in camelCase format is converted to snake_case format by the program.

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