add c file in ds

[shrutijain20]

Description

Give a short and meaningful description to an issue and PR

Also Reference Issue number using <#issue_no>

issue_no must refer to the issue related to this PR, visit here

Type of changes

Choose atleast one
NOTE: Check boxes using [x]

• Bug fix (changes that fixes an issue)
• New feature (changes that adds functionality)
• Documentation Updates if any

Checklist:

• I have named my files and folder, according to this project's guidelines.
• My code follows the style guidelines of this project.
• My Pull Request has a descriptive title. (not a vague title like Update index.md)
• I have commented on my code, particularly in hard-to-understand areas.
• I have created a helpful and easy to understand README.md, with problem description and my name.
• I have included a requirements.txt file (if external libraries are required.)
• My changes do not produce any warnings.
• I have starred this repository.
• I have added a working sample/screenshot of the script.
• I have checked for trailing spaces in file names and none have them.

[uddeshyatyagi]

@shrutijain20 could you first create an issue(for the PR you proposed) and link the issue by commenting(closes #issue_number or fixes #issue_number)

[uddeshyatyagi]

Your first program ain't reversing anything,please look into your code again and commit the changes